regulator: lp872x: Remove lp872x_dvs_state

After this driver was converted to gpiod, clang started warning:

vers/regulator/lp872x.c:689:57: error: implicit conversion from
enumeration type 'enum lp872x_dvs_state' to different enumeration type
'enum gpiod_flags' [-Werror,-Wenum-conversion]
dvs->gpio = devm_gpiod_get_optional(lp->dev, "ti,dvs", pinstate);
~~~~~~~~~~~~~~~~~~~~~~~ ^~~~~~~~
1 error generated.

lp872x_dvs_state was updated to have values from gpiod_flags but this is
not enough to avoid an implicit conversion warning from either GCC or
clang (although GCC enables this warning under -Wextra instead of -Wall
like clang so it is not seen under normal builds).

Eliminate lp872x_dvs_state in favor of using gpiod_flags everywhere so
that there is no more warning about an implicit conversion.

Fixes: 72bf80cf09c4 ("regulator: lp872x: replacing legacy gpio interface for gpiod")
Link: https://github.com/ClangBuiltLinux/linux/issues/1481
Signed-off-by: Nathan Chancellor <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/lp872x.c

···
 	enum lp872x_id chipid;
 	struct lp872x_platform_data *pdata;
 	int num_regulators;
-	enum lp872x_dvs_state dvs_pin;
+	enum gpiod_flags dvs_pin;
 };
 
 /* LP8720/LP8725 shared voltage table for LDOs */
···
 static void lp872x_set_dvs(struct lp872x *lp, enum lp872x_dvs_sel dvs_sel,
 			struct gpio_desc *gpio)
 {
-	enum lp872x_dvs_state state;
+	enum gpiod_flags state;
 
-	state = dvs_sel == SEL_V1 ? DVS_HIGH : DVS_LOW;
+	state = dvs_sel == SEL_V1 ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
 	gpiod_set_value(gpio, state);
 	lp->dvs_pin = state;
 }
···
 	switch (buck) {
 	case LP8720_ID_BUCK:
 		if (val & LP8720_EXT_DVS_M) {
-			addr = (lp->dvs_pin == DVS_HIGH) ?
+			addr = (lp->dvs_pin == GPIOD_OUT_HIGH) ?
 				LP8720_BUCK_VOUT1 : LP8720_BUCK_VOUT2;
 		} else {
 			if (lp872x_read_byte(lp, LP8720_ENABLE, &val))
···
 		if (val & LP8725_DVS1_M)
 			addr = LP8725_BUCK1_VOUT1;
 		else
-			addr = (lp->dvs_pin == DVS_HIGH) ?
+			addr = (lp->dvs_pin == GPIOD_OUT_HIGH) ?
 				LP8725_BUCK1_VOUT1 : LP8725_BUCK1_VOUT2;
 		break;
 	case LP8725_ID_BUCK2:
···
 static int lp872x_init_dvs(struct lp872x *lp)
 {
 	struct lp872x_dvs *dvs = lp->pdata ? lp->pdata->dvs : NULL;
-	enum lp872x_dvs_state pinstate;
+	enum gpiod_flags pinstate;
 	u8 mask[] = { LP8720_EXT_DVS_M, LP8725_DVS1_M | LP8725_DVS2_M };
 	u8 default_dvs_mode[] = { LP8720_DEFAULT_DVS, LP8725_DEFAULT_DVS };
 
···
 
 	of_property_read_u8(np, "ti,dvs-vsel", (u8 *)&pdata->dvs->vsel);
 	of_property_read_u8(np, "ti,dvs-state", &dvs_state);
-	pdata->dvs->init_state = dvs_state ? DVS_HIGH : DVS_LOW;
+	pdata->dvs->init_state = dvs_state ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
 
 	if (of_get_child_count(np) == 0)
 		goto out;

include/linux/regulator/lp872x.h

···
 	LP872X_ID_MAX,
 };
 
-enum lp872x_dvs_state {
-	DVS_LOW  = GPIOD_OUT_LOW,
-	DVS_HIGH = GPIOD_OUT_HIGH,
-};
-
 enum lp872x_dvs_sel {
 	SEL_V1,
 	SEL_V2,
···
 struct lp872x_dvs {
 	struct gpio_desc *gpio;
 	enum lp872x_dvs_sel vsel;
-	enum lp872x_dvs_state init_state;
+	enum gpiod_flags init_state;
 };
 
 /**