arm: tegra: use architecture specific memcpy

Use architecture specific memcpy to speed up things.

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

include/configs/tegra-common.h

@@ -116,6 +116,8 @@
 #define CONFIG_SYS_MEMTEST_START	(NV_PA_SDRC_CS0 + 0x600000)
 #define CONFIG_SYS_MEMTEST_END		(CONFIG_SYS_MEMTEST_START + 0x100000)
 
+#define CONFIG_USE_ARCH_MEMCPY
+
 /*-----------------------------------------------------------------------
  * Physical Memory Map
  */