Update BOOT_PART for Columbia uboot update service

Change-Id: I2781168ece50d1617d8d0f445e352e1c51317e3a
diff --git a/debian/usr/bin/install-uboot.sh b/debian/usr/bin/install-uboot.sh
index 1a7e56f..e3276f8 100755
--- a/debian/usr/bin/install-uboot.sh
+++ b/debian/usr/bin/install-uboot.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-BOOT_PART=mmcblk0boot0
+BOOT_PART=mmcblk2boot0
 MMCBLK_RO_PATH=/sys/block/${BOOT_PART}/force_ro
 
 UBOOT_PACKAGE_SIZE=$(stat -c%s /boot/u-boot.imx)