graphics/colmap: try#2 to unbreak on non-x86

../ext/VLFeat/libvlfeat.a(host.c.o): In function `_vl_x86cpu_info_init':
host.c:(.text+0x1c): undefined reference to `_vl_cpuid'
host.c:(.text+0x40): undefined reference to `_vl_cpuid'
collect2: error: ld returned 1 exit status

Reported by: pkg-fallout (aarch64, armv6)