fix compilation errors in emitinlinethumb.c

[urish]

When I tried to enable the @micropython.arm_thumb decorator for the nrf port, the compilation failed with many pointer type errors, such as the one below:

In file included from ../../py/reader.h:29:0,
                 from ../../py/lexer.h:33,
                 from ../../py/emit.h:29,
                 from ../../py/emitinlinethumb.c:33:
../../py/obj.h:651:10: note: expected 'const compressed_string_t * {aka const struct <anonymous> *}' but argument is of type 'const char *'
 mp_obj_t mp_obj_new_exception_msg(const mp_obj_type_t *exc_type, const compressed_string_t *msg);
          ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
../../py/mkrules.mk:55: recipe for target 'build-pca10059-s140/py/emitinlinethumb.o' failed

This PR fixes these errors. Now the code compiles successfully, and it also runs well - I managed to blink an LED on the nRF52840 dongle using the following test code:

import board
import digitalio
import time

digitalio.DigitalInOut(board.LED2_R).switch_to_output(False)

@micropython.asm_thumb
def ledOn():
    movwt(r1, 0x50000000 + 0x50c)
    movw(r2, 1 << 8)
    strh(r2, [r1, 0])

@micropython.asm_thumb
def ledOff():
    movwt(r1, 0x50000000 + 0x508)
    movw(r2, 1 << 8)
    strh(r2, [r1, 0])

while True:
    ledOn()
    time.sleep(0.5)
    ledOff()
    time.sleep(0.5)

[dhalbert]

The translations have changed since your commits, causing the translate build to fail. Could you rebase or merge with the latest, run make translate, and then recommit? Thanks.

[urish]

Thanks for the feedback @dhalbert , rebase + make translate done !

[dhalbert]

Great! We've completely ignored the inline stuff, but thanks for making it work for those who want and need it.

Note to others: that this doesn't turn on inline thumb by default, it just makes it work if it is turned on.