mips: ip32: add platform data hooks to use DS1685 driver

This modifies the IP32 (SGI O2) platform and reset code to utilize the new
rtc-ds1685 driver.  The old mc146818rtc.h header is removed and ip32_defconfig
is updated as well.

Signed-off-by: Joshua Kinard <kumba@gentoo.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --cc arch/mips/configs/ip32_defconfig
Simple merge

diff --cc arch/mips/include/asm/mach-ip32/mc146818rtc.h
Simple merge

diff --cc arch/mips/sgi-ip32/ip32-platform.c
Simple merge

diff --cc arch/mips/sgi-ip32/ip32-reset.c
Simple merge