Add arm64 code for downsample.
Add ARM64 Code and UnitTest for reconstruction
Merge pull request #1095 from ruil2/rc_fix_1

bEnableSceneChangeDetect should be true for screen content
use grey instead of green in EC without ref
Merge pull request #1094 from huili2/ec_grey_replace_green

use grey instead of green in EC without ref
Merge pull request #1092 from dongzha/AddRecARM64CodeAndUT

Add ARM64 Code and UnitTest for reconstruction
Merge pull request #1091 from zhilwang/arm64-downsample

Add arm64 code for downsample.
stop early error for parse/recon MB
add reconstruct UT input limitation
Merge pull request #1096 from huili2/early_stop_parse_rec_bug

stop early error for parse/recon MB
Merge pull request #1097 from dongzha/FixRecUT

add reconstruct UT input limitation
add MemoryZero Arm64 code and UT
Remove the executable bit from new assembly source files
Merge pull request #1098 from dongzha/AddCPMBARM64

add MemoryZero Arm64 code and UT
Merge pull request #1099 from mstorsjo/fix-chmod

Remove the executable bit from new assembly source files
add skip frame for screen content