broadcom/vc5: Emit flat shade flags for varying components > 24.

This means that with no flatshading we'll emit the single-byte
ZERO_ALL_FLAT_SHADE_FLAGS, and otherwise emit a set of FLAT_SHADE_FLAGS to
get all the bits we need set.

There's a _SET enum in the packet we could use to possibly set entire
ranges of the bitfield without using another packet, but this at least
fixes the conformance failure.

src/broadcom/compiler/vir.c

@@ -714,8 +714,12 @@ v3d_set_fs_prog_data_inputs(struct v3d_compile *c,
         memcpy(prog_data->input_slots, c->input_slots,
                c->num_inputs * sizeof(*c->input_slots));
 
-        memcpy(prog_data->flat_shade_flags, c->flat_shade_flags,
-               sizeof(c->flat_shade_flags));
+        STATIC_ASSERT(ARRAY_SIZE(prog_data->flat_shade_flags) >
+                      (V3D_MAX_FS_INPUTS - 1) / 24);
+        for (int i = 0; i < V3D_MAX_FS_INPUTS; i++) {
+                if (BITSET_TEST(c->flat_shade_flags, i))
+                        prog_data->flat_shade_flags[i / 24] |= 1 << (i % 24);
+        }
 }
 
 uint64_t *v3d_compile_fs(const struct v3d_compiler *compiler,