ARM: shmobile: Only select PM_RMOBILE for legacy case

Adjust the ARM mach-shmobile Kconfig bits to only
select PM_RMOBILE in case of legacy. This allows us
to enable partial multiplatform support for various
SoCs before Power Domains DT bindings are finalized.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/Kconfig

@@ -21,7 +21,7 @@ config ARCH_RCAR_GEN2
 
 config ARCH_RMOBILE
 	bool
-	select PM_RMOBILE if PM
+	select PM_RMOBILE if PM && !ARCH_SHMOBILE_MULTI
 	select SYS_SUPPORTS_SH_CMT
 	select SYS_SUPPORTS_SH_TMU