ARM: Rename ARCH_SHMOBILE to ARCH_SHMOBILE_LEGACY

SH-Mobile platforms are transitioning from non-multiplatform to
multiplatform kernel. A new ARCH_SHMOBILE_MULTI configuration symbol has
been created to group all multiplatform-enabled SH-Mobile SoCs. The
existing ARCH_SHMOBILE configuration symbol groups SoCs that haven't
been converted yet.

This arrangement works fine for the arch/ code, but lots of drivers
needed on both ARCH_SHMOBILE and ARCH_SHMOBILE_MULTI depend on
ARCH_SHMOBILE only. In order to avoid changing them, rename
ARCH_SHMOBILE to ARCH_SHMOBILE_LEGACY, and create a new boolean
ARCH_SHMOBILE configuration symbol that is selected by both
ARCH_SHMOBILE_LEGACY and ARCH_SHMOBILE_MULTI.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/arch/arm/configs/lager_defconfig b/arch/arm/configs/lager_defconfig
index 35bff5e..35dc8b2 100644
--- a/arch/arm/configs/lager_defconfig
+++ b/arch/arm/configs/lager_defconfig
@@ -12,7 +12,7 @@
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_ARCH_SHMOBILE=y
+CONFIG_ARCH_SHMOBILE_LEGACY=y
 CONFIG_ARCH_R8A7790=y
 CONFIG_MACH_LAGER=y
 # CONFIG_SH_TIMER_TMU is not set