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/chromebook_link64_defconfig b/configs/chromebook_link64_defconfig
index 9af2c4d..015f0ba 100644
--- a/configs/chromebook_link64_defconfig
+++ b/configs/chromebook_link64_defconfig
@@ -18,6 +18,7 @@
 CONFIG_HAVE_MRC=y
 CONFIG_SMP=y
 CONFIG_HAVE_VGA_BIOS=y
+CONFIG_NR_DRAM_BANKS=8
 CONFIG_FIT=y
 CONFIG_SPL_LOAD_FIT=y
 CONFIG_BOOTSTAGE=y