arm64: looprestoration: Do a tbl with 4 regs

Before:                 Cortex A53     A72      A73
selfguided_3x3_8bpc_neon:   3260.6  2175.4   2284.6
selfguided_5x5_8bpc_neon:   2553.2  1694.4   1809.2
selfguided_mix_8bpc_neon:   5720.0  3776.8   4000.5
After:
selfguided_3x3_8bpc_neon:   3315.6  2224.7   2310.5
selfguided_5x5_8bpc_neon:   2603.5  1729.7   1826.9
selfguided_mix_8bpc_neon:   5809.0  3866.3   4043.7
21 jobs for arm64-sgr-tbl-4reg in 10 minutes and 16 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Style
passed style-check #263111
amd64 debian

00:00:26

 
  Build
passed build-debian #263112
amd64 debian

00:00:42

passed build-debian-aarch64 #263120
debian aarch64

00:01:33

passed build-debian-aarch64-clang-5 #263121
debian aarch64

00:01:10

passed build-debian-armv7 #263124
debian armv7

00:02:38

passed build-debian-armv7-clang-5 #263125
debian armv7

00:00:59

passed build-debian-static #263113
amd64 debian

00:00:38

passed build-debian-werror #263123
debian aarch64

00:00:33

passed build-debian32 #263114
amd64 debian

00:00:34

passed build-macos #263122
macos

00:00:32

passed build-ubuntu-snap #263126
amd64 debian

00:00:42

passed build-win-arm32 #263118
amd64 debian

00:00:29

passed build-win-arm64 #263119
amd64 debian

00:00:32

passed build-win32 #263115
amd64 debian

00:00:39

passed build-win32-unaligned-stack #263116
amd64 debian

00:00:37

passed build-win64 #263117
amd64 debian

00:00:50

 
  Test
passed test-debian #263127
amd64 debian

00:00:46

passed test-debian-asan #263128
amd64 debian

00:02:10

passed test-debian-msan #263129
amd64 debian

00:01:15

passed test-debian-ubsan #263130
amd64 debian

00:01:34

passed test-win64 #263131
amd64 debian

00:00:48