py/inlineasm: Add ability to specify return type of asm_thumb funcs.

Supported return types are: object, bool, int, uint.

For example:

@micropython.asm_thumb
def foo(r0, r1) -> uint:
    add(r0, r0, r1)

1 files changed, 1 insertions, 1 deletions

diff --git a/py/emit.h b/py/emit.h
index 9d09ee2ef..7e8e03393 100644
--- a/py/emit.h
+++ b/py/emit.h
@@ -268,7 +268,7 @@ typedef struct _emit_inline_asm_t emit_inline_asm_t;
 
 typedef struct _emit_inline_asm_method_table_t {
     void (*start_pass)(emit_inline_asm_t *emit, pass_kind_t pass, scope_t *scope, mp_obj_t *error_slot);
-    void (*end_pass)(emit_inline_asm_t *emit);
+    void (*end_pass)(emit_inline_asm_t *emit, mp_uint_t type_sig);
     mp_uint_t (*count_params)(emit_inline_asm_t *emit, mp_uint_t n_params, mp_parse_node_t *pn_params);
     bool (*label)(emit_inline_asm_t *emit, mp_uint_t label_num, qstr label_id);
     void (*align)(emit_inline_asm_t *emit, mp_uint_t align);