Android: fix a missing nir_intrinsics.h error

The commit 76dfed8a changed nir_intrinsics.h to be a generated
header, but the corresponding dependency was not updated for Android.
It causes the error:

[  0% 19/4336] target  C: libmesa_pipe_radeonsi <= external/mesa/src/gallium/drivers/radeonsi/si_debug.c
...
In file included from external/mesa/src/gallium/drivers/radeonsi/si_debug.c:25:
In file included from external/mesa/src/gallium/drivers/radeonsi/si_pipe.h:28:
In file included from external/mesa/src/gallium/drivers/radeonsi/si_shader.h:140:
In file included from external/mesa/src/amd/common/ac_llvm_build.h:30:
external/mesa/src/compiler/nir/nir.h:966:10: fatal error: 'nir_intrinsics.h' file not found
         ^~~~~~~~~~~~~~~~~~
1 error generated.

Fixes: 76dfed8a ("nir: mako all the intrinsics")
Signed-off-by: Chih-Wei Huang <cwhuang@linux.org.tw>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Mauro Rossi <issor.oruam@gmail.com>
(cherry picked from commit e7ffd3fb)