ARM: OMAP: Turn CM and PRM access into functions

Otherwise compiling in omap2 and omap3 will not work.

Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/prm.h b/arch/arm/mach-omap2/prm.h
index e901fb9..bbf41fc 100644
--- a/arch/arm/mach-omap2/prm.h
+++ b/arch/arm/mach-omap2/prm.h
@@ -168,6 +168,18 @@
 /* Power/reset management domain register get/set */
 extern u32 prm_read_mod_reg(s16 module, u16 idx);
 extern void prm_write_mod_reg(u32 val, s16 module, u16 idx);
+extern u32 prm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx);
+
+/* Read-modify-write bits in a PRM register (by domain) */
+static inline u32 prm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
+{
+	return prm_rmw_mod_reg_bits(bits, bits, module, idx);
+}
+
+static inline u32 prm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
+{
+	return prm_rmw_mod_reg_bits(bits, 0x0, module, idx);
+}
 
 #endif