armv7/snow: Remove power_init from bootblock.

The power_init is not required on Exynos 5250 (snow) in bootblock stage. To get
a cleaner and faster bootblock, we can remove it.

Note, power_init internally calls max77686 and s3c24x0_i2c, so both files are
also removed.

Verified to boot on armv7/snow.

Change-Id: I5b15dfe5ac7bf4650565fea0afefc94a228ece29
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/2317
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/cpu/samsung/exynos5250/Makefile.inc

@@ -9,7 +9,6 @@
 bootblock-y += clock_init.c
 bootblock-y += clock.c
 bootblock-y += pinmux.c
-bootblock-y += power.c
 bootblock-y += soc.c
 bootblock-y += uart.c
 

src/cpu/samsung/s5p-common/Makefile.inc

@@ -1,5 +1,4 @@
 bootblock-y += pwm.c
-bootblock-y += s3c24x0_i2c.c
 bootblock-y += s5p_gpio.c
 bootblock-y += timer.c