tegra-common: increase malloc pool len by dfu mmc file buffer size

The dfu mmc file buffer, which was static, now is allocated
by memalign(), so the malloc pool len should be also increased.
Signed-off-by: NPrzemyslaw Marczak <p.marczak@samsung.com>
Cc: Tom Warren <twarren.nvidia@gmail.com>

include/configs/tegra-common.h

@@ -36,7 +36,12 @@
 /*
  * Size of malloc() pool
  */
+#ifdef CONFIG_DFU_MMC
+#define CONFIG_SYS_MALLOC_LEN		((4 << 20) + \
+					CONFIG_SYS_DFU_DATA_BUF_SIZE)
+#else
 #define CONFIG_SYS_MALLOC_LEN		(4 << 20)	/* 4MB  */
+#endif
 
 #define CONFIG_SYS_NONCACHED_MEMORY	(1 << 20)       /* 1 MiB */