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/cm44xx.h

@@ -23,6 +23,6 @@
 #define OMAP4_CM_CLKSTCTRL				0x0000
 #define OMAP4_CM_STATICDEP				0x0004
 
-int omap4_cm_init(void);
+int omap4_cm_init(const struct omap_prcm_init_data *data);
 
 #endif