bcma: change delays to follow timers-howto guide

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/bcma/driver_chipcommon_pmu.c b/drivers/bcma/driver_chipcommon_pmu.c
index 8b8f2f3..201faf1 100644
--- a/drivers/bcma/driver_chipcommon_pmu.c
+++ b/drivers/bcma/driver_chipcommon_pmu.c
@@ -76,7 +76,10 @@
 	if (max_msk)
 		bcma_cc_write32(cc, BCMA_CC_PMU_MAXRES_MSK, max_msk);
 
-	/* Add some delay; allow resources to come up and settle. */
+	/*
+	 * Add some delay; allow resources to come up and settle.
+	 * Delay is required for SoC (early init).
+	 */
 	mdelay(2);
 }