Use libnativewindow for platform variant of libagq

The SDK variant of libagq doesn't need libnativewindow as that
library didn't exist in sdk version 26, but it is necessary
for the platform variant.

Bug: 149591340
Test: m checkbuild
Change-Id: Ife99745fbb57c1d85241cf95c3a9767589d97f46
Merged-In: Ife99745fbb57c1d85241cf95c3a9767589d97f46
(cherry picked from commit 1b730a2bb59901c6bfd590421dd1d4f82f7a945e)
1 file changed