google/snow: enable 32KHz sleep clock

Change-Id: I9db91826e4534b8a6eea2b13bcf7c6abd848b4e4
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/3075
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/mainboard/google/snow/romstage.c

@@ -92,6 +92,8 @@ static int setup_pmic(void)
 	error |= max77686_volsetting(PMIC_BUS, PMIC_LDO10, CONFIG_VDD_LDO10_MV,
 						REG_ENABLE, MAX77686_MV);
 
+	error |= max77686_enable_32khz_cp(PMIC_BUS);
+
 	if (error)
 		printk(BIOS_CRIT, "%s: Error during PMIC setup\n", __func__);