android: pan/bi: Generate bi_opcodes.{c,h}

android: pan/bi: Generate bi_opcodes.{c,h}

Porting of commits 25c9946883ce and f9084b6c3f13 to Android makefile

Fixes the following building error:

In file included from external/mesa/src/panfrost/bifrost/bifrost_compile.c:36:
external/mesa/src/panfrost/bifrost/compiler.h:31:10: fatal error: 'bi_opcodes.h' file not found
         ^~~~~~~~~~~~~~
1 error generated.

Fixes: 25c9946883ce ("pan/bi: Generate bi_opcodes.c")
Fixes: f9084b6c3f13 ("pan/bi: Generate bi_opcodes.h")
Signed-off-by: Mauro Rossi <issor.oruam@gmail.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8239>