lima: use plain BOs for gl_pos and varyings

Suballocator doesn't really fit here since it can't resize backing BO.

Fixes crash in glmark2-es2-drm -b refract

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
14 jobs for !663 with lima-drop-suballocator in 9 minutes and 19 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Containers Build
passed #239966
ubuntu

00:00:15

 
  Build+Test
passed #239968
meson-clang

00:09:00

passed #239974
meson-gallium-clover-llvm

00:04:39

passed #239975
meson-gallium-clover-llvm39

00:04:59

passed #239973
meson-gallium-drivers-other

00:06:40

passed #239972
meson-gallium-radeonsi

00:03:07

passed #239976
meson-gallium-st-other

00:01:48

passed #239967
meson-gallium-swr

00:07:11

passed #239971
meson-glvnd

00:03:12

passed #239970
meson-loader-classic-dri

00:05:34

passed #239969
meson-vulkan

00:03:25

passed #239978
scons-llvm

00:03:31

passed #239977
scons-nollvm

00:03:15

passed #239979
scons-swr

00:04:15