piglit: add bash to RDEPENDS_piglit

piglit: add bash to RDEPENDS_piglit

Bash:
piglit/usr/lib/piglit/tests/asmparsertest/make_test_list.sh:#!/bin/bash
piglit/usr/lib/piglit/tests/asmparsertest/vp-tex.sh:#!/bin/bash
piglit/usr/lib/piglit/tests/spec/glsl-1.10/variable-index-read.sh:#!/bin/bash
piglit/usr/lib/piglit/tests/spec/glsl-1.10/variable-index-write.sh:#!/bin/bash
piglit/usr/lib/piglit/tests/spec/arb_shader_texture_lod/compiler/make_tex_lod_tests.sh:#!/bin/bash
piglit/usr/lib/piglit/tests/spec/glsl-1.20/execution/outerProduct-const.sh:#!/bin/bash
piglit/usr/lib/piglit/tests/spec/glsl-1.20/execution/outerProduct.sh:#!/bin/bash
piglit/usr/lib/piglit/tests/spec/glsl-1.20/compiler/built-in-functions/outerProduct-invalid-parameters.sh:#!/bin/bash
piglit/usr/lib/piglit/tests/glslparsertest/glsl2/make_tex_lod_tests.sh:#!/bin/bash
piglit/usr/lib/piglit/tests/glslparsertest/glsl2/make_tex_rect_tests.sh:#!/bin/bash

The bash scripts are in the tests directory, we had planned to move the
tests into the ptest pkg, but that would make piglit unusable without
installing piglit-ptest.

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>