OMAP2+: voltage: move PRCM mod offets into VC/VP structures

Eliminate need for global variables for the various PRM module offsets by
making them part of the VP/VC common structures

Eventually, these will likely be moved again, or more likely removed
when VP/VC code is isolated, but for now just getting rid of them as
global variabes so that the voltage domain initialization can be
cleaned up.

Signed-off-by: Kevin Hilman <khilman@ti.com>
diff --git a/arch/arm/mach-omap2/vc.h b/arch/arm/mach-omap2/vc.h
index e776777..f7338af 100644
--- a/arch/arm/mach-omap2/vc.h
+++ b/arch/arm/mach-omap2/vc.h
@@ -23,6 +23,7 @@
  * struct omap_vc_common_data - per-VC register/bitfield data
  * @cmd_on_mask: ON bitmask in PRM_VC_CMD_VAL* register
  * @valid: VALID bitmask in PRM_VC_BYPASS_VAL register
+ * @prm_mod: PRM module id used for PRM register access
  * @smps_sa_reg: Offset of PRM_VC_SMPS_SA reg from PRM start
  * @smps_volra_reg: Offset of PRM_VC_SMPS_VOL_RA reg from PRM start
  * @bypass_val_reg: Offset of PRM_VC_BYPASS_VAL reg from PRM start
@@ -40,6 +41,7 @@
 struct omap_vc_common_data {
 	u32 cmd_on_mask;
 	u32 valid;
+	s16 prm_mod;
 	u8 smps_sa_reg;
 	u8 smps_volra_reg;
 	u8 bypass_val_reg;