ARM: tegra: p2771-000: increase max DRAM bank count

On this platform, there may be up to 1024 unusable chunks of memory.
Increase CONFIG_NR_DRAM_BANKS so that U-Boot can remember all the banks
required to represent such fragmented memory.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NTom Warren <twarren@nvidia.com>

include/configs/p2771-0000.h

@@ -29,4 +29,7 @@
 /* Crystal is 38.4MHz. clk_m runs at half that rate */
 #define COUNTER_FREQUENCY	19200000
 
+#undef CONFIG_NR_DRAM_BANKS
+#define CONFIG_NR_DRAM_BANKS	(1024 + 2)
+
 #endif