kernel-devicetree: make shell scripts posix compliant

Use the notation suggested by Martin Jansa to avoid a bashism. Also
switch KERNEL_DTBVENDORED to the more common 0/1 notation instead of
true/false.

Fixes: 04ab57d200 (kernel-devicetree: allow specification of dtb
directory, 2023-05-02)

(From OE-Core rev: b7d6fc07462e6fca09d0db7f43a62920250ef053)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Randolph Sapp <rs@ti.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

2 files changed, 3 insertions, 3 deletions

diff --git a/meta/classes/kernel-devicetree.bbclass b/meta/classes/kernel-devicetree.bbclass
index 11b57adc92..e1e67cbc56 100644
--- a/meta/classes/kernel-devicetree.bbclass
+++ b/meta/classes/kernel-devicetree.bbclass
@@ -76,7 +76,7 @@ do_install:append() {
         for dtbf in ${KERNEL_DEVICETREE}; do
                 dtb=`normalize_dtb "$dtbf"`
                 dtb_path=`get_real_dtb_path_in_kernel "$dtb"`
-                if [ ${KERNEL_DTBVENDORED} == "false" ]; then
+                if "${@'false' if oe.types.boolean(d.getVar('KERNEL_DTBVENDORED')) else 'true'}"; then
                         dtb_ext=${dtb##*.}
                         dtb_base_name=`basename $dtb .$dtb_ext`
                         dtb=$dtb_base_name.$dtb_ext
@@ -91,7 +91,7 @@ do_deploy:append() {
                 dtb_ext=${dtb##*.}
                 dtb_base_name=`basename $dtb .$dtb_ext`
                 install -d $deployDir
-                if [ ${KERNEL_DTBVENDORED} == "false" ]; then
+                if "${@'false' if oe.types.boolean(d.getVar('KERNEL_DTBVENDORED')) else 'true'}"; then
                         dtb=$dtb_base_name.$dtb_ext
                 fi
                 install -m 0644 ${D}/${KERNEL_DTBDEST}/$dtb $deployDir/$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext
diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index 87dd46e6fa..3d5422b09e 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -211,7 +211,7 @@ KERNEL_RELEASE ?= "${KERNEL_VERSION}"
 KERNEL_OUTPUT_DIR ?= "arch/${ARCH}/boot"
 KERNEL_IMAGEDEST ?= "boot"
 KERNEL_DTBDEST ?= "${KERNEL_IMAGEDEST}"
-KERNEL_DTBVENDORED ?= "false"
+KERNEL_DTBVENDORED ?= "0"
 
 #
 # configuration