board/zynqmp: fix shellcheck issues

This patch cleans up board/zynqmp shellcheck issues.

Signed-off-by: Neal Frager <neal.frager@amd.com>
[Peter: wrap long lines, use quotes around entire word]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 48c3d9f396dd7a9fa426e3f7ddbff65a6270aeaf)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

board/zynqmp/kria/kv260/kv260.sh

@@ -6,7 +6,11 @@
 # drivers are missing.
 # This will be removed when u-boot can build the kv260 u-boot.itb natively.
 
-UBOOT_DIR=$4
+UBOOT_DIR="$4"
 
-fdtoverlay -o ${UBOOT_DIR}/fit-dtb.blob -i ${UBOOT_DIR}/arch/arm/dts/zynqmp-smk-k26-revA.dtb ${UBOOT_DIR}/arch/arm/dts/zynqmp-sck-kv-g-revB.dtbo
-${UBOOT_DIR}/tools/mkimage -E -f ${UBOOT_DIR}/u-boot.its -B 0x8 ${BINARIES_DIR}/u-boot.itb
+fdtoverlay -o "${UBOOT_DIR}/fit-dtb.blob" \
+	   -i "${UBOOT_DIR}/arch/arm/dts/zynqmp-smk-k26-revA.dtb" \
+	   "${UBOOT_DIR}/arch/arm/dts/zynqmp-sck-kv-g-revB.dtbo"
+
+"${UBOOT_DIR}/tools/mkimage" -E -f "${UBOOT_DIR}/u-boot.its" \
+			     -B 0x8 "${BINARIES_DIR}/u-boot.itb"

board/zynqmp/post-build.sh

@@ -3,14 +3,13 @@
 # genimage will need to find the extlinux.conf
 # in the binaries directory
 
-BOARD_DIR="$(dirname $0)"
-CONSOLE=$2
-ROOT=$3
+CONSOLE="$2"
+ROOT="$3"
 
 mkdir -p "${BINARIES_DIR}"
 cat <<-__HEADER_EOF > "${BINARIES_DIR}/extlinux.conf"
 	label linux
 	  kernel /Image
 	  devicetree /system.dtb
-	  append console=${CONSOLE} root=/dev/${ROOT} rw rootwait
+	  append console="${CONSOLE}" root="/dev/${ROOT}" rw rootwait
 	__HEADER_EOF

board/zynqmp/post-image.sh

@@ -6,10 +6,10 @@
 
 FIRST_DT=$(sed -nr \
                -e 's|^BR2_LINUX_KERNEL_INTREE_DTS_NAME="(xilinx/)?([-_/[:alnum:]\\.]*).*"$|\2|p' \
-               ${BR2_CONFIG})
+               "${BR2_CONFIG}")
 
-[ -z "${FIRST_DT}" ] || ln -fs ${FIRST_DT}.dtb ${BINARIES_DIR}/system.dtb
+[ -z "${FIRST_DT}" ] || ln -fs "${FIRST_DT}.dtb" "${BINARIES_DIR}/system.dtb"
 
-BOARD_DIR="$(dirname $0)"
+BOARD_DIR="$(dirname "$0")"
 
-support/scripts/genimage.sh -c $BOARD_DIR/genimage.cfg
+support/scripts/genimage.sh -c "${BOARD_DIR}/genimage.cfg"