Convert to new override syntax

This is the result of automated script conversion:

scripts/contrib/convert-overrides.py <oe-core directory>

converting the metadata to use ":" as the override character instead of "_".

(From OE-Core rev: 42344347be29f0997cc2f7636d9603b1fe1875ae)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/baremetal-image.bbclass

@@ -12,8 +12,8 @@
 
 # Toolchain should be baremetal or newlib based.
 # TCLIBC="baremetal" or TCLIBC="newlib"
-COMPATIBLE_HOST_libc-musl_class-target = "null"
-COMPATIBLE_HOST_libc-glibc_class-target = "null"
+COMPATIBLE_HOST:libc-musl:class-target = "null"
+COMPATIBLE_HOST:libc-glibc:class-target = "null"
 
 
 inherit rootfs-postcommands
@@ -61,7 +61,7 @@ python do_rootfs(){
 # Assure binaries, manifest and qemubootconf are populated on DEPLOY_DIR_IMAGE
 do_image_complete[dirs] = "${TOPDIR}"
 SSTATETASKS += "do_image_complete"
-SSTATE_SKIP_CREATION_task-image-complete = '1'
+SSTATE_SKIP_CREATION:task-image-complete = '1'
 do_image_complete[sstate-inputdirs] = "${IMGDEPLOYDIR}"
 do_image_complete[sstate-outputdirs] = "${DEPLOY_DIR_IMAGE}"
 do_image_complete[stamp-extra-info] = "${MACHINE_ARCH}"
@@ -77,18 +77,18 @@ QB_DEFAULT_KERNEL ?= "${IMAGE_LINK_NAME}.bin"
 QB_MEM ?= "-m 256"
 QB_DEFAULT_FSTYPE ?= "bin"
 QB_DTB ?= ""
-QB_OPT_APPEND_append = " -nographic"
+QB_OPT_APPEND:append = " -nographic"
 
 # RISC-V tunes set the BIOS, unset, and instruct QEMU to
 # ignore the BIOS and boot from -kernel
-QB_DEFAULT_BIOS_qemuriscv64 = ""
-QB_OPT_APPEND_append_qemuriscv64 = " -bios none"
+QB_DEFAULT_BIOS:qemuriscv64 = ""
+QB_OPT_APPEND:append:qemuriscv64 = " -bios none"
 
 
 # Use the medium-any code model for the RISC-V 64 bit implementation,
 # since medlow can only access addresses below 0x80000000 and RAM
 # starts at 0x80000000 on RISC-V 64
-CFLAGS_append_qemuriscv64 = " -mcmodel=medany"
+CFLAGS:append:qemuriscv64 = " -mcmodel=medany"
 
 
 # This next part is necessary to trick the build system into thinking