OMAP2/3: PRM/CM: prefix OMAP2 PRM/CM functions with "omap2_"

Now that OMAP4-specific PRCM functions have been added, distinguish the
existing OMAP2/3-specific PRCM functions by prefixing them with "omap2_".

This patch should not result in any functional change.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Jarkko Nikula <jhnikula@gmail.com>
Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index 95449b9..b5a6e17 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -236,9 +236,9 @@
 	 * Sidetone uses McBSP ICLK - which must not idle when sidetones
 	 * are enabled or sidetones start sounding ugly.
 	 */
-	w = cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE);
+	w = omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE);
 	w &= ~(1 << (mcbsp->id - 2));
-	cm_write_mod_reg(w, OMAP3430_PER_MOD, CM_AUTOIDLE);
+	omap2_cm_write_mod_reg(w, OMAP3430_PER_MOD, CM_AUTOIDLE);
 
 	/* Enable McBSP Sidetone */
 	w = MCBSP_READ(mcbsp, SSELCR);
@@ -265,9 +265,9 @@
 	w = MCBSP_READ(mcbsp, SSELCR);
 	MCBSP_WRITE(mcbsp, SSELCR, w & ~(SIDETONEEN));
 
-	w = cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE);
+	w = omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE);
 	w |= 1 << (mcbsp->id - 2);
-	cm_write_mod_reg(w, OMAP3430_PER_MOD, CM_AUTOIDLE);
+	omap2_cm_write_mod_reg(w, OMAP3430_PER_MOD, CM_AUTOIDLE);
 }
 
 static void omap_st_fir_write(struct omap_mcbsp *mcbsp, s16 *fir)