Use stdint.h types

[GitHub pull_request - opened <github@xxxxxxxxxxxxxxxx>]

alsa-project/alsa-firmware pull request #10 was opened from thesamesam:

u_int_* aren't standard, but uint* are. Use those instead for musl compat.

Bug: https://bugs.gentoo.org/832969

Request URL   : https://github.com/alsa-project/alsa-firmware/pull/10
Patch URL     : https://github.com/alsa-project/alsa-firmware/pull/10.patch
Repository URL: https://github.com/alsa-project/alsa-firmware