[RenderScript] Allow copyTo(short[]) etc for Float16 Allocations

http://b/27251511

Allow copyTo(short[]), copyFrom(short[]), and their 1D range and 2D
range variants to copy data between short[] arrays and Float16
Allocations.

Change-Id: I370584685c3b773c165bd718974ca736ed548339
(cherry picked from commit f51bb356deeb8a22414fb44cede4b8618c4b57ba)
1 file changed