* hw/kdrive/ephyr/ephyrhostvideo.c,h:
(ephyrHostXVLogXErrorEvent): add this to
log X error events. Heavily copied from libx11
(ephyrHostXVErrorHandler): new x error handler that
logs the error but does not exits.
(ephyrHostXVInit): add this to be called at the beginning
of xvideo lifetime. It sets an xerror handler that does not
exit.
* hw/kdrive/ephyr/ephyrvideo.c:
(ephyrXVPrivIsAttrValueValid): this validates an attribute
value.
(ephyrSetPortAttribute): before setting an attribute,
validate the new value so that we don't send a buggy
request to host X.
* hw/kdrive/ephyr/*.c: fix case in ephyrvideo code.
* hw/kdrive/ephyr/ephyr.c: fix a typo
1de89239bd