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/Hyundai_A7HD_defconfig b/configs/Hyundai_A7HD_defconfig
index 72327c9..187e254 100644
--- a/configs/Hyundai_A7HD_defconfig
+++ b/configs/Hyundai_A7HD_defconfig
@@ -14,6 +14,7 @@
 # CONFIG_VIDEO_LCD_BL_PWM_ACTIVE_LOW is not set
 CONFIG_VIDEO_LCD_PANEL_LVDS=y
 CONFIG_DEFAULT_DEVICE_TREE="sun4i-a10-hyundai-a7hd"
+CONFIG_NR_DRAM_BANKS=1
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_SPL_I2C_SUPPORT=y
 # CONFIG_CMD_FLASH is not set