kernel-devsrc: adjust NM and OBJTOOL variables for target

v5.13 has started storting the values for NM and OBJTOOL in
auto.conf.cmd

Just as we've done for other tools, we need to adjust NM and
OBJTOOL to the names of the on-target executables. With this
adjustment, 'make scripts prepare' continues to work without
user intervention on the target.

(From OE-Core rev: e749b81ece1f94f99ca26028a2f6f891aa14bda9)

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/linux/kernel-devsrc.bb

@@ -272,6 +272,8 @@ do_install() {
         sed -i 's/ifneq "$(CC)" ".*-linux-.*gcc.*$/ifneq "$(CC)" "gcc"/' "$kerneldir/build/include/config/auto.conf.cmd"
         sed -i 's/ifneq "$(LD)" ".*-linux-.*ld.bfd.*$/ifneq "$(LD)" "ld"/' "$kerneldir/build/include/config/auto.conf.cmd"
         sed -i 's/ifneq "$(AR)" ".*-linux-.*ar.*$/ifneq "$(AR)" "ar"/' "$kerneldir/build/include/config/auto.conf.cmd"
+        sed -i 's/ifneq "$(OBJCOPY)" ".*-linux-.*objcopy.*$/ifneq "$(OBJCOPY)" "objcopy"/' "$kerneldir/build/include/config/auto.conf.cmd"
+        sed -i 's/ifneq "$(NM)" ".*-linux-.*nm.*$/ifneq "$(NM)" "nm"/' "$kerneldir/build/include/config/auto.conf.cmd"
         sed -i 's/ifneq "$(HOSTCXX)" ".*$/ifneq "$(HOSTCXX)" "g++"/' "$kerneldir/build/include/config/auto.conf.cmd"
         sed -i 's/ifneq "$(HOSTCC)" ".*$/ifneq "$(HOSTCC)" "gcc"/' "$kerneldir/build/include/config/auto.conf.cmd"
         sed -i 's/ifneq "$(CC_VERSION_TEXT)".*\(gcc.*\)"/ifneq "$(CC_VERSION_TEXT)" "\1"/' "$kerneldir/build/include/config/auto.conf.cmd"