Merge "libeffects: Replace LoadConst_Float with memset for 0 loading." am: c293b92613 am: c7a3fc1081 am: fdd1f6bd1b

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

Change-Id: I081750d2ac72759f1c2a98d5977deaa15524dc91