regulator: qcom_spmi: Add support for get_mode/set_mode on switches

The voltage switches support mode switching, so add support for
these ops to those types of regulators.

Cc: Bjorn Andersson <[e-mail]>
Fixes: e92a4047419c ("regulator: Add QCOM SPMI regulator driver")
Signed-off-by: Stephen Boyd <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/qcom_spmi-regulator.c

···
 	.set_pull_down		= spmi_regulator_common_set_pull_down,
 	.set_soft_start		= spmi_regulator_common_set_soft_start,
 	.set_over_current_protection = spmi_regulator_vs_ocp,
+	.set_mode		= spmi_regulator_common_set_mode,
+	.get_mode		= spmi_regulator_common_get_mode,
 };
 
 static struct regulator_ops spmi_boost_ops = {