drisw: move build logic to build systems

Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
10 jobs for !1141 with drisw-shm in 7 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Containers Build
canceled debian #374044

00:00:07

 
  Build+Test
skipped meson-clang #374046
skipped meson-clover #374050
skipped meson-main #374049
skipped meson-swr-glvnd #374045
skipped meson-vulkan #374051
skipped scons-llvm #374053
skipped scons-nollvm #374052
skipped scons-swr #374047
skipped scons-win64 #374048