mingw32/mingw64 is not a supported value for GOOS, so map from 'mingw*' to
'windows' to enable building for windows targets.
(From OE-Core rev: 099bd78ce80772c42887104a40aa0a92fdaa6965)
Signed-off-by: Peter Morrow <pemorrow@linux.microsoft.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>