Do not call SIMD format conversion for width < 32

Neon SIMD functions do not support width < 32.

Bug: 143464314
Test: poc in bug

Change-Id: I2445c3d98c0b1afbb1ef480403bbc67add629cac
(cherry picked from commit 6219b83299f3c0322c4485582222f3dbd1f437a5)
1 file changed