OMAP3: PRCM: Consider UART4 for 3630 chip in prcm_setup_regs

To standarize among other uarts (1 to 3), we shall now:

 - Enable uart4 autodile bit.
 - Enable uart4 wakeup in PER.
 - Allow uart4 to wakeup the MPU.

Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
diff --git a/arch/arm/mach-omap2/cm-regbits-34xx.h b/arch/arm/mach-omap2/cm-regbits-34xx.h
index fe82b79..4f959a7 100644
--- a/arch/arm/mach-omap2/cm-regbits-34xx.h
+++ b/arch/arm/mach-omap2/cm-regbits-34xx.h
@@ -649,6 +649,8 @@
 #define OMAP3430_ST_MCBSP2_MASK				(1 << 0)
 
 /* CM_AUTOIDLE_PER */
+#define OMAP3630_AUTO_UART4_MASK			(1 << 18)
+#define OMAP3630_AUTO_UART4_SHIFT			18
 #define OMAP3430_AUTO_GPIO6_MASK			(1 << 17)
 #define OMAP3430_AUTO_GPIO6_SHIFT			17
 #define OMAP3430_AUTO_GPIO5_MASK			(1 << 16)