Snippets for pixman 0.46.4 from Alpine ppc64le

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-ppc64le/main/pixman/pixman-0.46.4-r0.log.

• ../pixman/pixman-glyph.c:656:1: warning: 'force_align_arg_pointer' attribute directive ignored [-Wattributes]
    656 | {
        | ^