Constrain and round YUV to RGB Conversion

The YUV to RGB conversion was overflowing for some YUV values. Fixing
the conversion by rounding and constraining the values

Fixes: 365034161
Flag: TEST_ONLY
Test: android.virtualdevice.cts.camera.VirtualCameraCaptureTest
Change-Id: I32439b74a9432e39de333ebcf7c3233e692c0d64
Merged-In: I32439b74a9432e39de333ebcf7c3233e692c0d64
(cherry picked from commit 87fb3ec7e60dd14f2435d098ab59ea349136f650)