ARM: OMAP2+: PRM: 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 PRM driver. Done in preparation to make PRM 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>
diff --git a/arch/arm/mach-omap2/prm33xx.h b/arch/arm/mach-omap2/prm33xx.h
index 98ac41f..2bc4ec5 100644
--- a/arch/arm/mach-omap2/prm33xx.h
+++ b/arch/arm/mach-omap2/prm33xx.h
@@ -118,7 +118,7 @@
 #define AM33XX_PM_CEFUSE_PWRSTST		AM33XX_PRM_REGADDR(AM33XX_PRM_CEFUSE_MOD, 0x0004)
 
 #ifndef __ASSEMBLER__
-int am33xx_prm_init(void);
+int am33xx_prm_init(const struct omap_prcm_init_data *data);
 
 #endif /* ASSEMBLER */
 #endif