ARM: OMAP3: PRM: add API for saving PRM scratchpad contents

This isolates the PRM register access within the PRM driver.

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

arch/arm/mach-omap2/control.c

@@ -44,8 +44,7 @@ struct omap3_scratchpad {
 };
 
 struct omap3_scratchpad_prcm_block {
-	u32 prm_clksrc_ctrl;
-	u32 prm_clksel;
+	u32 prm_contents[2];
 	u32 cm_contents[11];
 	u32 prcm_block_size;
 };
@@ -327,13 +326,7 @@ void omap3_save_scratchpad_contents(void)
 	scratchpad_contents.sdrc_block_offset = 0x64;
 
 	/* Populate the PRCM block contents */
-	prcm_block_contents.prm_clksrc_ctrl =
-		omap2_prm_read_mod_reg(OMAP3430_GR_MOD,
-				       OMAP3_PRM_CLKSRC_CTRL_OFFSET);
-	prcm_block_contents.prm_clksel =
-		omap2_prm_read_mod_reg(OMAP3430_CCR_MOD,
-				       OMAP3_PRM_CLKSEL_OFFSET);
-
+	omap3_prm_save_scratchpad_contents(prcm_block_contents.prm_contents);
 	omap3_cm_save_scratchpad_contents(prcm_block_contents.cm_contents);
 
 	prcm_block_contents.prcm_block_size = 0x0;