kmscube: Add patch to fix -int-conversion build error

On some platforms, `EGLNativeDisplayType` is an int instead of
a pointer, in which case the void pointer will raise
a `-Wint-conversion`.

Add change as a patch instead of updating SRCREV .
if we update SRCREV might will get compatiblity issue
with current gstreamer 1.20.7 version because SRCREV brings changes
which resolves negotiation issues encountered with V4L2 stateless
hardware video decoders when using kmscube video playback option
which has gstreamer dependency requirement to 1.22.0

(From OE-Core rev: 19a899d2ec69572e0eae4576d9fc55a7ba857309)

Signed-off-by: Purushottam Choudhary <purushottam27.kumar@lge.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>