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/xilinx_zynqmp_mini_qspi_defconfig b/configs/xilinx_zynqmp_mini_qspi_defconfig
index a4bc895..9e404bd 100644
--- a/configs/xilinx_zynqmp_mini_qspi_defconfig
+++ b/configs/xilinx_zynqmp_mini_qspi_defconfig
@@ -7,6 +7,7 @@
 CONFIG_ZYNQMP_NO_DDR=y
 # CONFIG_CMD_ZYNQMP is not set
 CONFIG_DEFAULT_DEVICE_TREE="zynqmp-mini-qspi"
+CONFIG_NR_DRAM_BANKS=1
 # CONFIG_IMAGE_FORMAT_LEGACY is not set
 CONFIG_BOOTDELAY=-1
 # CONFIG_DISPLAY_CPUINFO is not set