classes: make TOOLCHAIN more permissive for kernel

Currently TOOLCHAIN is strictly set to gcc in kernel-arch.bbclass.
And this prevents any TOOLCHAIN changes for any kernel recipe.
This change makes TOOLCHAIN configurable as usual.

(From OE-Core rev: 7d45d4696970c45534b905dc7a65418073108f97)

Signed-off-by: Alexey Smirnov <pyih.soft@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
(cherry picked from commit be1634fc35dcc81f0301d942064a6eed584e0704)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/kernel-arch.bbclass b/meta/classes/kernel-arch.bbclass
index 348a3adf22..4cd08b96fb 100644
--- a/meta/classes/kernel-arch.bbclass
+++ b/meta/classes/kernel-arch.bbclass
@@ -64,5 +64,5 @@ HOST_AR_KERNEL_ARCH ?= "${TARGET_AR_KERNEL_ARCH}"
 KERNEL_CC = "${CCACHE}${HOST_PREFIX}gcc ${HOST_CC_KERNEL_ARCH} -fuse-ld=bfd ${DEBUG_PREFIX_MAP} -fdebug-prefix-map=${STAGING_KERNEL_DIR}=${KERNEL_SRC_PATH} -fdebug-prefix-map=${STAGING_KERNEL_BUILDDIR}=${KERNEL_SRC_PATH}"
 KERNEL_LD = "${CCACHE}${HOST_PREFIX}ld.bfd ${HOST_LD_KERNEL_ARCH}"
 KERNEL_AR = "${CCACHE}${HOST_PREFIX}ar ${HOST_AR_KERNEL_ARCH}"
-TOOLCHAIN = "gcc"
+TOOLCHAIN ?= "gcc"