ARM: dra7xx_evm: Enable EDMA3 in SPL to support DMA on qspi

Enable TI_EDMA3 and SPL_DMA support, so as to reduce boot time. With
DMA enabled there is almost 3x improvement in read performance. This
helps in reducing boot time in qspiboot mode

Also add EDMA3 base address for DRA7XX and AM57XX.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>

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

@@ -23,4 +23,9 @@
 /* GPMC Base address */
 #define GPMC_BASE			0x50000000
 
+/* EDMA3 Base address for DRA7XX and AM57XX */
+#if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)
+#define EDMA3_BASE			0x43300000
+#endif
+
 #endif

include/configs/dra7xx_evm.h

@@ -166,6 +166,8 @@
 
 /* SPI SPL */
 #define CONFIG_SPL_SPI_SUPPORT
+#define CONFIG_SPL_DMA_SUPPORT
+#define CONFIG_TI_EDMA3
 #define CONFIG_SPL_SPI_LOAD
 #define CONFIG_SPL_SPI_FLASH_SUPPORT
 #define CONFIG_SYS_SPI_U_BOOT_OFFS     0x40000