scripts: Update the gcc-wrapper white list for 4.13.rc1 release

Update the white list of warnings for the latest kernel
release 4.13-rc1, which are being treated as errors while
compiling Kernel with clang compiler.

Change-Id: If53424c6e7c2d4b1843d0b44fe008852d8b2e81a
Signed-off-by: Runmin Wang <runminw@codeaurora.org>