msm: timer: Decrease shift on timer clocksource

The shift of 24 causes the shift and multiply operation to sometimes
overflow, resulting in incorrect timer values and poor performance.
Signed-off-by: Jeff Ohlstein <johlstei@codeaurora.org>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>

arch/arm/mach-msm/timer.c

@@ -137,7 +137,7 @@ static struct msm_clock msm_clocks[] = {
 			.rating         = 200,
 			.read           = msm_gpt_read,
 			.mask           = CLOCKSOURCE_MASK(32),
-			.shift          = 24,
+			.shift          = 17,
 			.flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 		},
 		.irq = {