configs: Migrate CONFIG_NR_DRAM_BANKS

We have the following cases:
- CONFIG_NR_DRAM_BANKS was defined, migrate normally
- CONFIG_NR_DRAM_BANKS_MAX was defined and then used for
  CONFIG_NR_DRAM_BANKS after a check, just migrate it over now.
- CONFIG_NR_DRAM_BANKS was very oddly defined on p2771-0000-* (to 1024 +
  2), set this to 8.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/peach-pi_defconfig b/configs/peach-pi_defconfig
index 988e260..5115d71 100644
--- a/configs/peach-pi_defconfig
+++ b/configs/peach-pi_defconfig
@@ -7,6 +7,7 @@
 CONFIG_IDENT_STRING=" for Peach-Pi"
 CONFIG_DEFAULT_DEVICE_TREE="exynos5800-peach-pi"
 CONFIG_DISTRO_DEFAULTS=y
+CONFIG_NR_DRAM_BANKS=7
 CONFIG_FIT=y
 CONFIG_FIT_BEST_MATCH=y
 CONFIG_SILENT_CONSOLE=y