msm: pm8921-chg: configure alarm voltage for 8930

The battery alarm is used in charger to switch to 19.2Mhz clock when the
battery goes low before a certain threshold. This way we prevent lockups
if a shutdown or UVLO were to happen.

Configure the low battery voltage for 8930  based hardware.

Change-Id: I33252dffcbadcdbe92e8967388ef28bce55476f3
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
(cherry picked from commit c725804b7cb90a761f75d519c866d0b184e568fc)
diff --git a/arch/arm/mach-msm/board-8930-pmic.c b/arch/arm/mach-msm/board-8930-pmic.c
index cadd676..a3e1b27 100644
--- a/arch/arm/mach-msm/board-8930-pmic.c
+++ b/arch/arm/mach-msm/board-8930-pmic.c
@@ -214,6 +214,7 @@
 	.max_voltage		= MAX_VOLTAGE_MV,
 	.min_voltage		= 3200,
 	.uvd_thresh_voltage	= 4050,
+	.alarm_voltage          = 3400,
 	.resume_voltage_delta	= 100,
 	.term_current		= CHG_TERM_MA,
 	.cool_temp		= 10,