drivers: sh: Get rid of CONFIG_ARCH_SHMOBILE_MULTI

Shmobile is all multiplatform these days, so get rid of the reference to
CONFIG_ARCH_SHMOBILE_MULTI.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/drivers/sh/pm_runtime.c b/drivers/sh/pm_runtime.c
index 25abd4e..91a00301 100644
--- a/drivers/sh/pm_runtime.c
+++ b/drivers/sh/pm_runtime.c
@@ -34,7 +34,7 @@
 
 static int __init sh_pm_runtime_init(void)
 {
-	if (IS_ENABLED(CONFIG_ARCH_SHMOBILE_MULTI)) {
+	if (IS_ENABLED(CONFIG_ARCH_SHMOBILE)) {
 		if (!of_find_compatible_node(NULL, NULL,
 					     "renesas,cpg-mstp-clocks"))
 			return 0;