ARM: aspeed: Select timer in each SoC

In preparation for adding the ast2600 which does not use this timer.
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/mach-aspeed/Kconfig

@@ -5,7 +5,6 @@ menuconfig ARCH_ASPEED
 	select SRAM
 	select WATCHDOG
 	select ASPEED_WATCHDOG
-	select FTTMR010_TIMER
 	select MFD_SYSCON
 	select PINCTRL
 	help
@@ -18,6 +17,7 @@ config MACH_ASPEED_G4
 	depends on ARCH_MULTI_V5
 	select CPU_ARM926T
 	select PINCTRL_ASPEED_G4
+	select FTTMR010_TIMER
 	help
 	 Say yes if you intend to run on an Aspeed ast2400 or similar
 	 fourth generation BMCs, such as those used by OpenPower Power8
@@ -28,6 +28,7 @@ config MACH_ASPEED_G5
 	depends on ARCH_MULTI_V6
 	select CPU_V6
 	select PINCTRL_ASPEED_G5
+	select FTTMR010_TIMER
 	help
 	 Say yes if you intend to run on an Aspeed ast2500 or similar
 	 fifth generation Aspeed BMCs.