android: aco: fix PIPE_FORMAT related building errors

android: aco: fix PIPE_FORMAT related building errors

Fixes the following building errors:

In file included from external/mesa/src/amd/compiler/aco_dead_code_analysis.cpp:25:
In file included from external/mesa/src/amd/compiler/aco_ir.h:33:
In file included from external/mesa/src/compiler/nir/nir.h:40:
external/mesa/src/util/format/u_format.h:33:10: fatal error: 'pipe/p_format.h' file not found
#include "pipe/p_format.h"
         ^~~~~~~~~~~~~~~~~
...
In file included from external/mesa/src/amd/compiler/aco_dominance.cpp:31:
In file included from external/mesa/src/amd/compiler/aco_ir.h:33:
In file included from external/mesa/src/compiler/nir/nir.h:40:
external/mesa/src/util/format/u_format.h:33:10: fatal error: 'pipe/p_format.h' file not found
#include "pipe/p_format.h"
         ^~~~~~~~~~~~~~~~~
...
In file included from external/mesa/src/amd/compiler/aco_instruction_selection.cpp:31:
In file included from external/mesa/src/amd/common/ac_shader_util.h:32:
In file included from external/mesa/src/compiler/nir/nir.h:40:
external/mesa/src/util/format/u_format.h:33:10: fatal error: 'pipe/p_format.h' file not found
#include "pipe/p_format.h"
         ^~~~~~~~~~~~~~~~~
3 errors generated.

Fixes: 8d07d661 ("glsl,nir: Switch the enum representing shader image formats to PIPE_FORMAT.")
Signed-off-by: Mauro Rossi <issor.oruam@gmail.com>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>