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/cherryhill_defconfig b/configs/cherryhill_defconfig
index 4dd7ae5..25f9625 100644
--- a/configs/cherryhill_defconfig
+++ b/configs/cherryhill_defconfig
@@ -8,6 +8,7 @@
 CONFIG_DEBUG_UART=y
 CONFIG_SMP=y
 CONFIG_GENERATE_MP_TABLE=y
+CONFIG_NR_DRAM_BANKS=8
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_LAST_STAGE_INIT=y