can: flexcan: remove HAVE_CAN_FLEXCAN Kconfig symbol

This patch removes the Kconfig symbol HAVE_CAN_FLEXCAN from arch/{arm,powerpc}
and allowing compilation unconditionally on all arm and powerpc platforms.

This brings a bigger compile time coverage and removes the following dependency
warning found by Arnd Bergmann:

    warning: (SOC_IMX28 && SOC_IMX25 && SOC_IMX35 && IMX_HAVE_PLATFORM_FLEXCAN &&
        SOC_IMX53 && SOC_IMX6Q) selects HAVE_CAN_FLEXCAN
    which has unmet direct dependencies (NET && CAN && CAN_DEV)

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

arch/arm/mach-imx/Kconfig

@@ -111,7 +111,6 @@ config SOC_IMX25
 	select ARCH_MXC_IOMUX_V3
 	select COMMON_CLK
 	select CPU_ARM926T
-	select HAVE_CAN_FLEXCAN if CAN
 	select MXC_AVIC
 
 config SOC_IMX27
@@ -137,7 +136,6 @@ config SOC_IMX35
 	select ARCH_MXC_IOMUX_V3
 	select COMMON_CLK
 	select CPU_V6K
-	select HAVE_CAN_FLEXCAN if CAN
 	select HAVE_EPIT
 	select MXC_AVIC
 	select SMP_ON_UP if SMP
@@ -776,7 +774,6 @@ comment "Device tree only"
 
 config	SOC_IMX53
 	bool "i.MX53 support"
-	select HAVE_CAN_FLEXCAN if CAN
 	select HAVE_IMX_SRC
 	select IMX_HAVE_PLATFORM_IMX2_WDT
 	select PINCTRL
@@ -799,7 +796,6 @@ config SOC_IMX6Q
 	select CPU_V7
 	select HAVE_ARM_SCU if SMP
 	select HAVE_ARM_TWD if LOCAL_TIMERS
-	select HAVE_CAN_FLEXCAN if CAN
 	select HAVE_IMX_ANATOP
 	select HAVE_IMX_GPC
 	select HAVE_IMX_MMDC

arch/arm/mach-imx/devices/Kconfig

@@ -4,7 +4,6 @@ config IMX_HAVE_PLATFORM_FEC
 
 config IMX_HAVE_PLATFORM_FLEXCAN
 	bool
-	select HAVE_CAN_FLEXCAN if CAN
 
 config IMX_HAVE_PLATFORM_FSL_USB2_UDC
 	bool

arch/arm/mach-mxs/Kconfig

@@ -11,7 +11,6 @@ config SOC_IMX28
 	select ARM_AMBA
 	select ARM_CPU_SUSPEND if PM
 	select CPU_ARM926T
-	select HAVE_CAN_FLEXCAN if CAN
 	select HAVE_PWM
 	select PINCTRL_IMX28
 

arch/powerpc/Kconfig

@@ -674,7 +674,6 @@ config SBUS
 
 config FSL_SOC
 	bool
-	select HAVE_CAN_FLEXCAN if NET && CAN
 
 config FSL_PCI
  	bool

drivers/net/can/Kconfig

@@ -102,12 +102,9 @@ config CAN_JANZ_ICAN3
 	  This driver can also be built as a module. If so, the module will be
 	  called janz-ican3.ko.
 
-config HAVE_CAN_FLEXCAN
-	bool
-
 config CAN_FLEXCAN
 	tristate "Support for Freescale FLEXCAN based chips"
-	depends on HAVE_CAN_FLEXCAN
+	depends on ARM || PPC
 	---help---
 	  Say Y here if you want to support for Freescale FlexCAN.