core/cortex-m/irq_handler.h: Format with clang-format
core/cortex-m/irq_handler.h: Format with clang-format

BUG=b:236386294
BRANCH=none
TEST=none

Change-Id: I219906a9e12057dc850b19a34ec32d53c10e943a
Signed-off-by: Jack Rosenthal <d3f605bef1867f59845d4ce6e4f83b8dc9e4e0ae@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3729821
Reviewed-by: Jeremy Bettis <4df7b5147fee087dca33c181f288ee7dbf56e022@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec