omap3: Add Base register for DMA

Adding the base register address of OMAP3 DMA controller.

Signed-off-by: Simon Schwarz <simonschwarzcor@gmail.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

arch/arm/include/asm/arch-omap3/omap3.h

@@ -47,6 +47,9 @@
 #define OMAP34XX_L4_PER			0x49000000
 #define OMAP34XX_L4_IO_BASE		OMAP34XX_CORE_L4_IO_BASE
 
+/* DMA4/SDMA */
+#define OMAP34XX_DMA4_BASE              0x48056000
+
 /* CONTROL */
 #define OMAP34XX_CTRL_BASE		(OMAP34XX_L4_IO_BASE + 0x2000)