main: fix TOP_LEVEL_ARRAY_SIZE and TOP_LEVEL_ARRAY_STRIDE

main: fix TOP_LEVEL_ARRAY_SIZE and TOP_LEVEL_ARRAY_STRIDE

When the active variable is an array which is already a top-level
shader storage block member, don't return its array size and stride
when querying TOP_LEVEL_ARRAY_SIZE and TOP_LEVEL_ARRAY_STRIDE
respectively.

Fixes the following 12 dEQP-GLES31 tests:

dEQP-GLES31.functional.ssbo.layout.single_basic_array.shared.mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.shared.row_major_mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.shared.column_major_mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.packed.mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.packed.row_major_mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.packed.column_major_mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.std140.mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.std140.row_major_mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.std140.column_major_mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.std430.mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.std430.row_major_mat3x4
dEQP-GLES31.functional.ssbo.layout.single_basic_array.std430.column_major_mat3x4

v2:
- Fix check when the shader storage block is instanced
- Write auxiliary function to do the check.

v3:
- Check if full_instanced_name is NULL just after allocation (Ilia)
- Remove () from one strcmp() in the if statement (Ilia)

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Tested-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>