PM / devfreq: tegra20: Deprecate in a favor of emc-stat based driver

Remove tegra20-devfreq in order to replace it with a EMC_STAT based
devfreq driver. Previously we were going to use MC_STAT based
tegra20-devfreq driver because EMC_STAT wasn't working properly, but
now that problem is resolved. This resolves complications imposed by
the removed driver since it was depending on both EMC and MC drivers
simultaneously.

Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

MAINTAINERS

@@ -11339,7 +11339,6 @@ L:	linux-pm@vger.kernel.org
 L:	linux-tegra@vger.kernel.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git
 S:	Maintained
-F:	drivers/devfreq/tegra20-devfreq.c
 F:	drivers/devfreq/tegra30-devfreq.c
 
 MEMORY MANAGEMENT

drivers/devfreq/Kconfig

@@ -121,16 +121,6 @@ config ARM_TEGRA_DEVFREQ
 	  It reads ACTMON counters of memory controllers and adjusts the
 	  operating frequencies and voltages with OPP support.
 
-config ARM_TEGRA20_DEVFREQ
-	tristate "NVIDIA Tegra20 DEVFREQ Driver"
-	depends on ARCH_TEGRA_2x_SOC || COMPILE_TEST
-	depends on COMMON_CLK
-	select DEVFREQ_GOV_SIMPLE_ONDEMAND
-	help
-	  This adds the DEVFREQ driver for the Tegra20 family of SoCs.
-	  It reads Memory Controller counters and adjusts the operating
-	  frequencies and voltages with OPP support.
-
 config ARM_RK3399_DMC_DEVFREQ
 	tristate "ARM RK3399 DMC DEVFREQ Driver"
 	depends on (ARCH_ROCKCHIP && HAVE_ARM_SMCCC) || \

drivers/devfreq/Makefile

@@ -13,7 +13,6 @@ obj-$(CONFIG_ARM_IMX_BUS_DEVFREQ)	+= imx-bus.o
 obj-$(CONFIG_ARM_IMX8M_DDRC_DEVFREQ)	+= imx8m-ddrc.o
 obj-$(CONFIG_ARM_RK3399_DMC_DEVFREQ)	+= rk3399_dmc.o
 obj-$(CONFIG_ARM_TEGRA_DEVFREQ)		+= tegra30-devfreq.o
-obj-$(CONFIG_ARM_TEGRA20_DEVFREQ)	+= tegra20-devfreq.o
 
 # DEVFREQ Event Drivers
 obj-$(CONFIG_PM_DEVFREQ_EVENT)		+= event/