[Midnightbsd-cvs] src: cpufreq.c: add missing header, fix prototype for usage

[laffer1 at midnightbsd.org]

Log Message:
-----------
add missing header, fix prototype for usage

Modified Files:
--------------
    src/usr.bin/cpufreq:
        cpufreq.c (r1.1 -> r1.2)
        (http://cvsweb.midnightbsd.org/src/usr.bin/cpufreq/cpufreq.c?r1=1.1&r2=1.2)