power: regulator: add driver for Dialog DA9063 PMIC

Add a driver for the regulators in the the DA9063 PMIC.

Robert Beckett: move regulator modes to header so board code can set
modes. Correct mode mask used in ldo_set_mode.
Add an option CONFIG_SPL_DM_REGULATOR_DA9063.

Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group>
Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
diff --git a/include/power/da9063_pmic.h b/include/power/da9063_pmic.h
index 9b0f76c..273a07e 100644
--- a/include/power/da9063_pmic.h
+++ b/include/power/da9063_pmic.h
@@ -305,4 +305,16 @@
 #define DA9063_LDO_DRIVER	"da9063_ldo"
 #define DA9063_BUCK_DRIVER	"da9063_buck"
 
+/* Regulator modes */
+enum {
+	DA9063_LDOMODE_SLEEP,
+	DA9063_LDOMODE_NORMAL
+};
+
+enum {
+	DA9063_BUCKMODE_SLEEP,
+	DA9063_BUCKMODE_SYNC,
+	DA9063_BUCKMODE_AUTO,
+};
+
 #endif