i965: Combine {VS,FS}_OPCODE_GET_BUFFER_SIZE opcodes.

These are the same, we don't need a separate opcode enum per backend.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/intel/compiler/brw_shader.cpp

@@ -331,6 +331,9 @@ brw_instruction_name(const struct gen_device_info *devinfo, enum opcode op)
    case SHADER_OPCODE_BROADCAST:
       return "broadcast";
 
+   case SHADER_OPCODE_GET_BUFFER_SIZE:
+      return "get_buffer_size";
+
    case VEC4_OPCODE_MOV_BYTES:
       return "mov_bytes";
    case VEC4_OPCODE_PACK_BYTES:
@@ -373,9 +376,6 @@ brw_instruction_name(const struct gen_device_info *devinfo, enum opcode op)
    case FS_OPCODE_PIXEL_Y:
       return "pixel_y";
 
-   case FS_OPCODE_GET_BUFFER_SIZE:
-      return "fs_get_buffer_size";
-
    case FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD:
       return "uniform_pull_const";
    case FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD_GEN7:
@@ -422,9 +422,6 @@ brw_instruction_name(const struct gen_device_info *devinfo, enum opcode op)
    case VS_OPCODE_SET_SIMD4X2_HEADER_GEN9:
       return "set_simd4x2_header_gen9";
 
-   case VS_OPCODE_GET_BUFFER_SIZE:
-      return "vs_get_buffer_size";
-
    case VS_OPCODE_UNPACK_FLAGS_SIMD4X2:
       return "unpack_flags_simd4x2";