ARM: imx: enable multi-platform build

It enables multi-platform build for imx.  With ARCH_MULTI_* options
coming to play, ARCH_MXC becomes an user invisible option, while
ARCH_IMX_V4_V5 and ARCH_IMX_V6_V7 get removed.  Both imx_v4_v5_defconfig
and imx_v6_v7_defconfig get updated to adopt the changes.

AUTO_ZRELADDR and ARM_PATCH_PHYS_VIRT are selected by ARCH_MXC now to
save the duplication.

Headers timex.h and uncompress.h are not needed for multi-platform
build.  Remove them.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/Kconfig

@@ -433,19 +433,6 @@ config ARCH_FOOTBRIDGE
 	  Support for systems based on the DC21285 companion chip
 	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 
-config ARCH_MXC
-	bool "Freescale MXC/iMX-based"
-	select ARCH_REQUIRE_GPIOLIB
-	select CLKDEV_LOOKUP
-	select CLKSRC_MMIO
-	select GENERIC_CLOCKEVENTS
-	select GENERIC_IRQ_CHIP
-	select MULTI_IRQ_HANDLER
-	select SPARSE_IRQ
-	select USE_OF
-	help
-	  Support for Freescale MXC/iMX-based family of processors
-
 config ARCH_MXS
 	bool "Freescale MXS-based"
 	select ARCH_REQUIRE_GPIOLIB

arch/arm/configs/imx_v4_v5_defconfig

@@ -17,8 +17,9 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_ARCH_MXC=y
-CONFIG_ARCH_IMX_V4_V5=y
+CONFIG_ARCH_MULTI_V4T=y
+CONFIG_ARCH_MULTI_V5=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_MX1ADS=y
 CONFIG_MACH_SCB9328=y
 CONFIG_MACH_APF9328=y

arch/arm/configs/imx_v6_v7_defconfig

@@ -16,7 +16,8 @@ CONFIG_MODULE_UNLOAD=y
 CONFIG_MODVERSIONS=y
 CONFIG_MODULE_SRCVERSION_ALL=y
 # CONFIG_BLK_DEV_BSG is not set
-CONFIG_ARCH_MXC=y
+CONFIG_ARCH_MULTI_V6=y
+CONFIG_ARCH_MULTI_V7=y
 CONFIG_MACH_MX31LILLY=y
 CONFIG_MACH_MX31LITE=y
 CONFIG_MACH_PCM037=y

arch/arm/mach-imx/Kconfig

@@ -1,4 +1,20 @@
-if ARCH_MXC
+config ARCH_MXC
+	def_bool y if ARCH_MULTI_V4_V5 || ARCH_MULTI_V6_V7
+	select ARCH_REQUIRE_GPIOLIB
+	select ARM_PATCH_PHYS_VIRT
+	select AUTO_ZRELADDR if !ZBOOT_ROM
+	select CLKDEV_LOOKUP
+	select CLKSRC_MMIO
+	select GENERIC_CLOCKEVENTS
+	select GENERIC_IRQ_CHIP
+	select MULTI_IRQ_HANDLER
+	select SPARSE_IRQ
+	select USE_OF
+	help
+	  Support for Freescale MXC/iMX-based family of processors
+
+menu "Freescale i.MX support"
+	depends on ARCH_MXC
 
 config MXC_IRQ_PRIOR
 	bool "Use IRQ priority"
@@ -161,21 +177,7 @@ config	SOC_IMX51
 	select PINCTRL_IMX51
 	select SOC_IMX5
 
-menu "Freescale MXC Implementations"
-
-choice
-	prompt "Freescale CPU family:"
-	default ARCH_IMX_V6_V7
-
-config ARCH_IMX_V4_V5
-	bool "i.MX1, i.MX21, i.MX25, i.MX27"
-	select ARM_PATCH_PHYS_VIRT
-	select AUTO_ZRELADDR if !ZBOOT_ROM
-	help
-	  This enables support for systems based on the Freescale i.MX ARMv4
-	  and ARMv5 SoCs
-
-if ARCH_IMX_V4_V5
+if ARCH_MULTI_V4T
 
 comment "MX1 platforms:"
 config MACH_MXLADS
@@ -204,6 +206,10 @@ config MACH_APF9328
 	help
 	  Say Yes here if you are using the Armadeus APF9328 development board
 
+endif
+
+if ARCH_MULTI_V5
+
 comment "MX21 platforms:"
 
 config MACH_MX21ADS
@@ -455,16 +461,7 @@ config MACH_IMX27_DT
 
 endif
 
-config ARCH_IMX_V6_V7
-	bool "i.MX3, i.MX5, i.MX6"
-	select ARM_PATCH_PHYS_VIRT
-	select AUTO_ZRELADDR if !ZBOOT_ROM
-	select MIGHT_HAVE_CACHE_L2X0
-	help
-	  This enables support for systems based on the Freescale i.MX3, i.MX5
-	  and i.MX6 family.
-
-if ARCH_IMX_V6_V7
+if ARCH_MULTI_V6
 
 comment "MX31 platforms:"
 
@@ -729,6 +726,10 @@ config MACH_VPR200
 	  Include support for VPR200 platform. This includes specific
 	  configurations for the board and its peripherals.
 
+endif
+
+if ARCH_MULTI_V7
+
 comment "i.MX5 platforms:"
 
 config MACH_MX50_RDP
@@ -847,10 +848,6 @@ config SOC_IMX6Q
 
 endif
 
-endchoice
-
-endmenu
-
 source "arch/arm/mach-imx/devices/Kconfig"
 
-endif
+endmenu