ARM: dts: dra7: Change pbias voltage to 3.3V

As per recent TRM[1], PBIAS cell on dra7 devices supports
3.3v and not 3.0v as documented earlier.

Update PBIAS regulator max voltage and the voltage written
in the driver to reflect this.

[1] http://www.ti.com/lit/pdf/sprui30

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
diff --git a/drivers/power/regulator/pbias_regulator.c b/drivers/power/regulator/pbias_regulator.c
index 4ed3c94..88dc9f2 100644
--- a/drivers/power/regulator/pbias_regulator.c
+++ b/drivers/power/regulator/pbias_regulator.c
@@ -238,7 +238,7 @@
 	if (rc)
 		return rc;
 
-	if (uV == 3000000)
+	if (uV == 3300000)
 		reg |= p->vmode;
 	else if (uV == 1800000)
 		reg &= ~p->vmode;