hwaccess: use __asm__ as it is done elsewhere

`asm()` doesn't work with musl libc, as it is specific to glibc. Thus,
use `__asm__` as it is done elsewhere to fix compilation under
non-glibc.

Change-Id: I834fa6e171d2b20e1a5faa5a2e8f54caf107171a
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/63487
Original-Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Original-Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Original-Reviewed-by: Thomas Heijligen <src@posteo.de>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/72340
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
1 file changed