linux-yocto linux-yocto-dev: Fix /bin/awk issues

084857b1 ("linux-yocto: Handle /bin/awk issues") makes one mistake and
misses one substitution causing the following warning.

Warning: Kernel ABI header at 'tools/arch/x86/tools/gen-insn-attr-x86.awk'
differs from latest version at 'arch/x86/tools/gen-insn-attr-x86.awk'

Fixes: 084857b1 ("linux-yocto: Handle /bin/awk issues")
Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>