m68k/mac: Make CONFIG_HEARTBEAT unavailable on Mac
m68k/mac: Make CONFIG_HEARTBEAT unavailable on Mac

mac_heartbeat() was never really implemented.

Signed-off-by: Geert Uytterhoeven <0da414d9d963da4039c2a0525b1844228075aa58@linux-m68k.org>
Acked-by: Greg Ungerer <ed22c22dbde360207569092e60b4298397efb8da@uclinux.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas