regulator: bd71837: copy the bd71837 pmic driver from NXP imx u-boot

https://source.codeaurora.org/external/imx/uboot-imx

cherry picked, styled and merged commits:
- MLK-18387 pmic: Add pmic driver for BD71837: e9a3bec2e95a
- MLK-18590 pmic: bd71837: Change to use new fdt API: acdc5c297a96

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/power/bd71837.h b/include/power/bd71837.h
new file mode 100644
index 0000000..38c69b2
--- /dev/null
+++ b/include/power/bd71837.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (C) 2018 ROHM Semiconductors */
+
+#ifndef BD71837_H_
+#define BD71837_H_
+
+#define BD71837_REGULATOR_DRIVER "bd71837_regulator"
+
+enum {
+	BD71837_REV		= 0x00,
+	BD71837_SWRESET		= 0x01,
+	BD71837_I2C_DEV		= 0x02,
+	BD71837_PWRCTRL0	= 0x03,
+	BD71837_PWRCTRL1	= 0x04,
+	BD71837_BUCK1_CTRL	= 0x05,
+	BD71837_BUCK2_CTRL	= 0x06,
+	BD71837_BUCK3_CTRL	= 0x07,
+	BD71837_BUCK4_CTRL	= 0x08,
+	BD71837_BUCK5_CTRL	= 0x09,
+	BD71837_BUCK6_CTRL	= 0x0a,
+	BD71837_BUCK7_CTRL	= 0x0b,
+	BD71837_BUCK8_CTRL	= 0x0c,
+	BD71837_BUCK1_VOLT_RUN	= 0x0d,
+	BD71837_BUCK1_VOLT_IDLE	= 0x0e,
+	BD71837_BUCK1_VOLT_SUSP	= 0x0f,
+	BD71837_BUCK2_VOLT_RUN	= 0x10,
+	BD71837_BUCK2_VOLT_IDLE	= 0x11,
+	BD71837_BUCK3_VOLT_RUN	= 0x12,
+	BD71837_BUCK4_VOLT_RUN	= 0x13,
+	BD71837_BUCK5_VOLT	= 0x14,
+	BD71837_BUCK6_VOLT	= 0x15,
+	BD71837_BUCK7_VOLT	= 0x16,
+	BD71837_BUCK8_VOLT	= 0x17,
+	BD71837_LDO1_VOLT	= 0x18,
+	BD71837_LDO2_VOLT	= 0x19,
+	BD71837_LDO3_VOLT	= 0x1a,
+	BD71837_LDO4_VOLT	= 0x1b,
+	BD71837_LDO5_VOLT	= 0x1c,
+	BD71837_LDO6_VOLT	= 0x1d,
+	BD71837_LDO7_VOLT	= 0x1e,
+	BD71837_TRANS_COND0	= 0x1f,
+	BD71837_TRANS_COND1	= 0x20,
+	BD71837_VRFAULTEN	= 0x21,
+	BD71837_MVRFLTMASK0	= 0x22,
+	BD71837_MVRFLTMASK1	= 0x23,
+	BD71837_MVRFLTMASK2	= 0x24,
+	BD71837_RCVCFG		= 0x25,
+	BD71837_RCVNUM		= 0x26,
+	BD71837_PWRONCONFIG0	= 0x27,
+	BD71837_PWRONCONFIG1	= 0x28,
+	BD71837_RESETSRC	= 0x29,
+	BD71837_MIRQ		= 0x2a,
+	BD71837_IRQ		= 0x2b,
+	BD71837_IN_MON		= 0x2c,
+	BD71837_POW_STATE	= 0x2d,
+	BD71837_OUT32K		= 0x2e,
+	BD71837_REGLOCK		= 0x2f,
+	BD71837_MUXSW_EN	= 0x30,
+	BD71837_REG_NUM,
+};
+
+#endif