Fixes a race where it tries to build version res file in build directory
before it has even been created. Prevents intermittent errors on
autobuilder when building for mingw:
| /bin/bash ../SDL2-2.0.10/build-scripts/updaterev.sh
| /bin/bash ../SDL2-2.0.10/build-scripts/mkinstalldirs build
| mkdir -p -- build
| x86_64-pokysdk-mingw32-windres --include-dir=/home/pokybuild/yocto-worker/meta-mingw/build/build/tmp/work/x86_64-nativesdk-mingw32-pokysdk-mingw32/nativesdk-libsdl2/2.0.10-r0/recipe-sysroot/opt/poky/3.0/sysroots/x86_64-pokysdk-mingw32/us
| /include ../SDL2-2.0.10/src/main/windows/version.rc build/version.o
| x86_64-pokysdk-mingw32-windres: build/version.o: No such file or directory
| Makefile:692: recipe for target 'build/version.o' failed
| make: *** [build/version.o] Error 1
| make: *** Waiting for unfinished jobs....
| touch build/.created
| WARNING: exit code 1 from a shell command.
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
