ARM: omap2plus: select RESET_CONTROLLER

With the new omap_prm driver added unconditionally, omap2 builds
fail when the reset controller subsystem is disabled:

drivers/soc/ti/omap_prm.o: In function `omap_prm_probe':
omap_prm.c:(.text+0x2d4): undefined reference to `devm_reset_controller_register'

Link: https://lore.kernel.org/r/20191216132132.3330811-1-arnd@arndb.de
Fixes: 3e99cb21 ("soc: ti: add initial PRM driver with reset control support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-omap2/Kconfig

@@ -95,6 +95,7 @@ config ARCH_OMAP2PLUS
 	bool
 	select ARCH_HAS_BANDGAP
 	select ARCH_HAS_HOLES_MEMORYMODEL
+	select ARCH_HAS_RESET_CONTROLLER
 	select ARCH_OMAP
 	select CLKSRC_MMIO
 	select GENERIC_IRQ_CHIP
@@ -105,11 +106,11 @@ config ARCH_OMAP2PLUS
 	select OMAP_DM_TIMER
 	select OMAP_GPMC
 	select PINCTRL
+	select RESET_CONTROLLER
 	select SOC_BUS
 	select TI_SYSC
 	select OMAP_IRQCHIP
 	select CLKSRC_TI_32K
-	select ARCH_HAS_RESET_CONTROLLER
 	help
 	  Systems based on OMAP2, OMAP3, OMAP4 or OMAP5