ARM: OMAP2+: CM: move SoC specific init calls within a generic API

This gets rid of need for some exported driver APIs, and simplifies the
initialization of the CM driver. Done in preparation to make CM a
separate driver. The init data is now also passed to the SoC specific
implementations, allowing future expansion to add feature flags etc.

Signed-off-by: Tero Kristo <t-kristo@ti.com>

arch/arm/mach-omap2/prm_common.c

@@ -770,7 +770,13 @@ int __init omap2_prm_base_init(void)
 
 int __init omap2_prcm_base_init(void)
 {
-	return omap2_prm_base_init();
+	int ret;
+
+	ret = omap2_prm_base_init();
+	if (ret)
+		return ret;
+
+	return omap2_cm_base_init();
 }
 
 /**