doc: board: Update Microchip MPFS Icicle Kit doc

UART1 use for U-Boot and Linux console instead of UART0 and
UART0 is reserved for Hart Software Services(HSS).

Signed-off-by: Padmarao Begari <padmarao.begari@microchip.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/doc/board/microchip/mpfs_icicle.rst b/doc/board/microchip/mpfs_icicle.rst
index c71c2f3..a4b10c6 100644
--- a/doc/board/microchip/mpfs_icicle.rst
+++ b/doc/board/microchip/mpfs_icicle.rst
@@ -20,6 +20,7 @@
 2. Microchip Clock Driver.
 3. Cadence MACB ethernet driver for networking support.
 4. Cadence MMC Driver for eMMC/SD support.
+5. Microchip I2C Driver.
 
 Booting from eMMC using HSS
 ---------------------------
@@ -214,7 +215,8 @@
 Booting
 ~~~~~~~
 
-You should see the U-Boot prompt on UART0.
+You should see the U-Boot prompt on UART1.
+(Note: UART0 is reserved for HSS)
 
 Sample boot log from MPFS Icicle Kit
 ''''''''''''''''''''''''''''''''''''
@@ -451,7 +453,8 @@
 
     sudo dd if=<payload_binary> of=/dev/sdX2 bs=512
 
-You should see the U-Boot prompt on UART0.
+You should see the U-Boot prompt on UART1.
+(Note: UART0 is reserved for HSS)
 
 GUID type
 ~~~~~~~~~