Remove optional --directisa call to hwclock, this is the default anyway.

This is a followup to Olivier Blin's patch from 88ffb93 in that it
applies the same patch to finit-mod.c that is already in finit.c, or
finit-alt.c as it was called then.

Also, the optional --directisa argument to hwclock is not necessary.
The hwclock utility has a built-in fallback to use excplicit I/O over
the /dev/rtc in case the latter does not exist.  See the hwclock(8) man
page for more information on this.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

Makefile

@@ -25,11 +25,6 @@ CFLAGS += -U_FORTIFY_SOURCE
 # Omit the first /sbin/hwclock if CONFIG_RTC_HCTOSYS is enabled in the kernel 
 #CFLAGS += -DNO_HCTOSYS
 
-# Append -directisa to /sbin/hwclock lines if the user has disabled
-# CONFIG_GENRTC and enabled CONFIG_RTC but not enabled CONFIG_HPET_TIMER
-# and CONFIG_HPET_RTC_IRQ.
-#CFLAGS += -DDIRECTISA
-
 # Use built-in run-parts instead of /bin/run-parts
 CFLAGS += -DBUILTIN_RUNPARTS