Merge "libeffects: Replace LoadConst_Float with memset for 0 loading." am: c293b92613 am: c7a3fc1081

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1677105

Change-Id: I3a8d877f4338480af5d44ab5511317f8e2a1432b