genxml: Remove MI_ARB_ON_OFF::Allow Lite Restore from Gen12+

The HW field appears to have been removed.  It's no longer in the docs
starting with Gen12.  Instead, it says:

    "This instruction can be used to prevent submission of a new
    execlist from interrupting a command sequence, however lite restore
    preemption is allowed with in the arbitration disabled command
    execution zone."
38 jobs for !3648 with review/tgl-genxml-arb-on-off in 22 minutes and 32 seconds (queued for 4 seconds)
latest detached
Status Job ID Name Coverage
  Container
passed #1513265
aarch64
arm_build

00:00:35

passed #1513266
aarch64
arm_test

00:00:20

passed #1513262
x86_build

00:00:19

passed #1513264
x86_build_old

00:00:21

passed #1513263
x86_test-gl

00:00:21

 
  Build
passed #1513270
aarch64
meson-arm64

00:09:33

passed #1513269
aarch64
meson-armhf

00:09:19

passed #1513271
meson-clang

00:07:34

passed #1513274
meson-clover

00:06:10

passed #1513275
meson-clover-old-llvm

00:05:51

passed #1513277
meson-i386

00:04:25

passed #1513268
meson-main

00:06:16

passed #1513278
meson-mingw32-x86_64

00:05:21

passed #1513267
meson-testing

00:06:06

passed #1513276
meson-vulkan

00:03:59

passed #1513279
scons

00:03:22

passed #1513280
scons-old-llvm

00:05:53

passed #1513272
scons-swr

00:05:52

passed #1513273
scons-win64

00:05:41

 
  Test
passed #1513299
db410c
arm64_a306_gles2

00:06:23

passed #1513296
mesa-cheza
arm64_a630_gles2

00:01:59

passed #1513298
mesa-cheza
arm64_a630_gles3

00:06:50

passed #1513297
mesa-cheza
arm64_a630_gles31

00:04:52

passed #1513284
lava-meson-gxl-s905x-libretech-cc
lima-mali450-test:arm64

00:09:37

passed #1513281
lava-sun50i-h6-pine-h64
panfrost-t720-test:arm64

00:09:49

passed #1513282
lava-rk3288-veyron-jaq
panfrost-t760-test:armhf

00:10:32

passed #1513283
lava-rk3399-gru-kevin
panfrost-t860-test:arm64

00:09:49

passed #1513286
piglit-glslparser

00:05:28

passed #1513285
piglit-quick_gl

00:07:04

passed #1513287
piglit-quick_shader

00:05:59

passed #1513288
test-llvmpipe-gles2

00:05:27

passed #1513289
test-softpipe-gles2

00:01:39

passed #1513292
test-softpipe-gles31 1/4

00:02:54

passed #1513290
test-softpipe-gles3 1/2

00:05:04

passed #1513293
test-softpipe-gles31 2/4

00:04:47

passed #1513294
test-softpipe-gles31 3/4

00:04:55

passed #1513295
test-softpipe-gles31 4/4

00:03:15

passed #1513291
test-softpipe-gles3 2/2

00:05:15