mfd: da9063: Replace model with type

The model number stored in the struct da9063 is the same for all
variants of the da9063 since it is the chip ID, which is always
the same. Replace that with a separate identifier instead, which
allows us to discern the DA9063 variants by setting the type
based on either DT match or otherwise.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

include/linux/mfd/da9063/core.h

@@ -31,6 +31,10 @@
 
 #define PMIC_CHIP_ID_DA9063		0x61
 
+enum da9063_type {
+	PMIC_TYPE_DA9063 = 0,
+};
+
 enum da9063_variant_codes {
 	PMIC_DA9063_AD = 0x3,
 	PMIC_DA9063_BB = 0x5,
@@ -73,7 +77,7 @@ enum da9063_irqs {
 struct da9063 {
 	/* Device */
 	struct device	*dev;
-	unsigned short	model;
+	enum da9063_type type;
 	unsigned char	variant_code;
 	unsigned int	flags;