etnaviv: fix nir validation problem

Fixes the following validation problem:
  error: nir_intrinsic_range(instr) != 0 (../src/compiler/nir/nir_validate.c:646)

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
37 jobs for !8009 with nir-validate in 21 seconds (queued for 2 seconds)
latest detached
Status Job ID Name Coverage
  Sanity
passed #6074188
sanity

00:00:21

 
  Container
manual #6074191
aarch64 manual
arm_build
manual #6074192
manual
arm_test-base
manual #6074193
windows shell 1809 mesa manual
windows_build_vs2019
manual #6074189
manual
x86_build-base
manual #6074190
manual
x86_test-base
 
  Container 2
created #6074201
android_build
created #6074204
arm64_test
created #6074205
armhf_test
created #6074198
i386_build
created #6074194
kernel+rootfs_amd64
created #6074195
aarch64
kernel+rootfs_arm64
created #6074196
aarch64
kernel+rootfs_armhf
created #6074199
ppc64el_build
created #6074200
s390x_build
created #6074197
x86_build
created #6074202
x86_test-gl
created #6074203
x86_test-vk
 
  Meson X86 64
created #6074211
meson-clang
created #6074210
meson-classic
created #6074212
meson-clover
created #6074207
meson-clover-testing
created #6074208
meson-gallium
created #6074209
meson-release
created #6074206
meson-testing
created #6074213
meson-vulkan
 
  Build Misc
created #6074214
meson-android
created #6074216
aarch64
meson-arm64
created #6074217
aarch64
meson-arm64-build-test
created #6074215
aarch64
meson-armhf
created #6074220
meson-i386
created #6074223
meson-mingw32-x86_64
created #6074222
kvm
meson-ppc64el
created #6074221
kvm
meson-s390x
created #6074218
windows docker 1809 mesa
meson-windows-vs2019
created #6074219
allowed to fail
scons-win64
 
  Layered Backends
created #6074224
windows docker 1809 mesa
test-d3d12-windows