debian: distclean the *install files
debian: distclean the *install files

MAINTCLEAN wraps around DISTCLEAN, so we can drop the files from the
former.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
(cherry picked from commit 6b562d65cbfcb200af3b8e98f20f4293d967713b)

Conflicts:
	debian.upstream/Makefile.am

CyanogenMod/android_hardware_intel_libva,android-ia/hardware_intel_libva,android-ia/hardware_intel_libva,CyanogenMod/android_hardware_intel_libva,android-ia/hardware_intel_libva,CyanogenMod/android_hardware_intel_libva