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/colibri-imx6ull_defconfig b/configs/colibri-imx6ull_defconfig
index 85962e5..d5df52f 100644
--- a/configs/colibri-imx6ull_defconfig
+++ b/configs/colibri-imx6ull_defconfig
@@ -6,6 +6,7 @@
 CONFIG_TARGET_COLIBRI_IMX6ULL=y
 CONFIG_DEFAULT_DEVICE_TREE="imx6ull-colibri"
 CONFIG_DISTRO_DEFAULTS=y
+CONFIG_NR_DRAM_BANKS=1
 CONFIG_FIT=y
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/toradex/colibri-imx6ull/imximage.cfg,MX6ULL,IMX_NAND"
 CONFIG_BOOTDELAY=1