meta-zephyr-sdk: Get QEMU SRCREV from qemu submodule

This commit updates the QEMU recipe to obtain the SRCREV from the sdk-ng 'qemu' submodule. Signed-off-by: Stephanos Ioannidis <root@stephanos.io>

Author: stephanosio

meta-zephyr-sdk/recipes-devtools/qemu/qemu-zephyr_git.bb

@@ -37,7 +37,7 @@ inherit pkgconfig systemd python3native
 LIC_FILES_CHKSUM = "file://COPYING;md5=441c28d2cf86e15a37fa47e15a72fbac \
  file://COPYING.LIB;endline=24;md5=8c5efda6cf1e1b03dcfd0e6c0d271c7f"
 
-SRCREV = "fe132ed0c9ae14a56bbf94b1d0d16b029b671c62"
+SRCREV = "${ZEPHYR_SDK_QEMU_SRCREV}"
 SRC_URI = "gitsm://github.com/zephyrproject-rtos/qemu.git;protocol=https;nobranch=1 \
  https://github.com/zephyrproject-rtos/seabios/releases/download/zephyr-v1.16.3-2/bios-128k.bin;name=bios-128k \
  https://github.com/zephyrproject-rtos/seabios/releases/download/zephyr-v1.16.3-2/bios-256k.bin;name=bios-256k \

meta-zephyr-sdk/scripts/meta-zephyr-sdk-build.sh

@@ -49,6 +49,9 @@ if [ ! -d $TOOLCHAINS ] ; then
 fi
 rm -rf $TOOLCHAINS/*
 
+export ZEPHYR_SDK_QEMU_SRCREV=$(cd qemu; git rev-parse HEAD)
+export BB_ENV_PASSTHROUGH_ADDITIONS="${BB_ENV_PASSTHROUGH_ADDITIONS} ZEPHYR_SDK_QEMU_SRCREV"
+
 # setconf_var, i.e. "MACHINE","qemuarm",$localconf
 setconf_var()
 {