libvtswidevine prebuilts: make arm 32-bit armv7-a compatible

Bug: 190147491
Bug: 190558382
Bug: 190579088
Bug: 199250358
Test: atest VtsHalDrmV1_2TargetTest -- --abi armeabi-v7a
Change-Id: I38083ab5e63fc5c7f6fb7b345d9daab980670b6b
1 file changed