scripts/patch-kernel.sh: remove -E flag to preserve empty files touched by patches Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 46723
patch-kernel.sh: utilize --force (#7745), also use the PATCH env var and fallback to "patch" if unset SVN-Revision: 23314
finally move buildroot-ng to trunk