Snippets for alsa-tools 1.2.15 from Alpine armv7

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-armv7/community/alsa-tools/alsa-tools-1.2.15-r1.log.

• /usr/include/sys/fcntl.h:1:2: warning: #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h> [-Wcpp]
      1 | #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h>
        |  ^~~~~~~