Fix ION_IOC_MAP error on old ion api during drm video playback

Video playback in the Google Play Video app would
result in an ION_IOC_MAP invalid argument error and
the app to display error 22.

This fixes some old ion api code left out with the
"display: Reconcile display HALs" commit which resulted
in the invalid arugment or an out of memory error.

This was found using a Nexus 4 (mako) and the Google Play Movies
app while attempting DRM video playback.

Change-Id: I2f7724515cbb7449086611fb79d042ea71d6eb39