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
 

src/drivers/maxim/max77686/Makefile.inc

@@ -17,6 +17,5 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 ##
 
-bootblock-$(CONFIG_DRIVER_MAXIM_MAX77686) += max77686.c
 romstage-$(CONFIG_DRIVER_MAXIM_MAX77686) += max77686.c
 ramstage-$(CONFIG_DRIVER_MAXIM_MAX77686) += max77686.c

src/mainboard/google/snow/bootblock.c

@@ -27,7 +27,6 @@
 #include <cpu/samsung/exynos5250/dmc.h>
 #include <cpu/samsung/exynos5250/periph.h>
 #include <cpu/samsung/exynos5250/clock_init.h>
-#include <src/cpu/samsung/exynos5250/power.h>
 
 #endif
 
@@ -37,7 +36,6 @@ void bootblock_mainboard_init(void)
 	struct mem_timings *mem;
 	struct arm_clk_ratios *arm_ratios;
 
-	power_init();
 	mem = get_mem_timings();
 	arm_ratios = get_arm_clk_ratios();
 	system_clock_init(mem, arm_ratios);