riscv: Update Microchip MPFS Icicle Kit support

This patch updates Microchip MPFS Icicle Kit support. For now,
add Microchip QSPI driver and a small 4MB reservation is
made at the end of 32-bit DDR to provide some memory for
the HSS to use.

Signed-off-by: Padmarao Begari <padmarao.begari@microchip.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Rick Chen <rick@andestech.com>
diff --git a/board/microchip/mpfs_icicle/Kconfig b/board/microchip/mpfs_icicle/Kconfig
index e370913..7cd5a59 100644
--- a/board/microchip/mpfs_icicle/Kconfig
+++ b/board/microchip/mpfs_icicle/Kconfig
@@ -50,5 +50,12 @@
 	imply CMD_I2C
 	imply DM_I2C
 	imply SYS_I2C_MICROCHIP
+	imply SPI
+	imply DM_SPI
+	imply MICROCHIP_COREQSPI
+	imply MTD_SPI_NAND
+	imply CMD_MTD
+	imply MTD_PARTITIONS
+	imply CMD_MTDPARTS
 
 endif