MAINTAINERS: Remove unneded wildcard for the i915 DRM driver

There is no other file but the UAPI header, thus we can drop the
wildcard.

Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Acked-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NEmil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461279842-28695-3-git-send-email-emil.l.velikov@gmail.com

MAINTAINERS

@@ -3794,7 +3794,7 @@ T:	git git://anongit.freedesktop.org/drm-intel
 S:	Supported
 F:	drivers/gpu/drm/i915/
 F:	include/drm/i915*
-F:	include/uapi/drm/i915*
+F:	include/uapi/drm/i915_drm.h
 
 DRM DRIVERS FOR ATMEL HLCDC
 M:	Boris Brezillon <boris.brezillon@free-electrons.com>