regulator: anatop-regulator: Remove unneeded memset()

sreg is allocated via devm_kzalloc(), so there is no need to explicitly zero out
rdesc via memset().

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c
index 3d4997a..862e63e 100644
--- a/drivers/regulator/anatop-regulator.c
+++ b/drivers/regulator/anatop-regulator.c
@@ -124,7 +124,6 @@
 	sreg->initdata = initdata;
 	sreg->name = of_get_property(np, "regulator-name", NULL);
 	rdesc = &sreg->rdesc;
-	memset(rdesc, 0, sizeof(*rdesc));
 	rdesc->name = sreg->name;
 	rdesc->ops = &anatop_rops;
 	rdesc->type = REGULATOR_VOLTAGE;