gcc-47-warning.patch was integrated, so drop.
Add pkgconfig-deps.patch, a backport of a commit to fix bad exposed library
dependencies (which resulted in the keyboard driver depending on pixman).
(From OE-Core rev: 723e81af2a5b07024ab744c14cdccc12f554ef12)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>