compiling profiling broken

[Kip Macy <kmacy@xxxxxxxxxxx>]

Don't worry 4.6.2, and 4.8 don't work. I guess profiling isn't 
interesting to many people nonetheless it would be nice if it worked:
mcount.o: In function `mcount':
mcount.o(.text+0x21): undefined reference to `disable_intr'
bioscall.o: In function `bios32':
bioscall.o(.text+0x1): undefined reference to `_mcount'
bioscall.o: In function `bios16_call':
bioscall.o(.text+0x71): undefined reference to `_mcount'
exception.o: In function `Xfpu':
exception.o(.text+0x15c): undefined reference to `_mcount'
exception.o: In function `alltraps_with_regs_pushed':
exception.o(.text+0x1c8): undefined reference to `_mcount'
exception.o: In function `calltrap':
exception.o(.text+0x1d4): undefined reference to `_mcount'
exception.o(.text+0x23c): more undefined references to `_mcount' follow
swtch.o: In function `tosw1a':
swtch.o(.text+0x1d6): undefined reference to `sw1a'
*** Error code 1