OMAP5: I2C: Add I2C4 and I2C5 bases

I2C4 and I2C5 are utilized on all known OMAP5 hardware platforms.
The I2C4 and I2C5 base addresses were however not defined; do this
here.

Signed-off-by: Lubomir Popov <lpopov@mm-sol.com>

arch/arm/include/asm/arch-omap5/cpu.h

@@ -142,6 +142,8 @@ struct watchdog {
 #define I2C_BASE1		(OMAP54XX_L4_PER_BASE + 0x70000)
 #define I2C_BASE2		(OMAP54XX_L4_PER_BASE + 0x72000)
 #define I2C_BASE3		(OMAP54XX_L4_PER_BASE + 0x60000)
+#define I2C_BASE4		(OMAP54XX_L4_PER_BASE + 0x7A000)
+#define I2C_BASE5		(OMAP54XX_L4_PER_BASE + 0x7C000)
 
 /* MUSB base */
 #define MUSB_BASE		(OMAP54XX_L4_CORE_BASE + 0xAB000)