include: axp_pmic: Include headers for all variants

A single DM-based driver should be able to support some feature for
several PMIC variants where the interface is the same. For example,
all PMIC variants use the same register bit to trigger poweroff.

However, currently only definitions for a single PMIC are available at
a time. This requires drivers to use #ifdefs and different indentifiers
for each variant they support.

Let's simplify this by making register definitions for all variants
available from the header. Then no preprocessor conditions are needed;
the driver can use the register definition from any variant that
supports the relevant feature.

An exception is the GPIO-related definitions, which do not use unique
identifiers. So for now, keep them like before. They will be cleaned up
along with the GPIO driver.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/include/axp818.h b/include/axp818.h
index b16fe0b..8bac6b6 100644
--- a/include/axp818.h
+++ b/include/axp818.h
@@ -58,6 +58,7 @@
 #define AXP818_SHUTDOWN_POWEROFF	(1 << 7)
 
 /* For axp_gpio.c */
+#ifdef CONFIG_AXP818_POWER
 #define AXP_POWER_STATUS		0x00
 #define AXP_POWER_STATUS_VBUS_PRESENT		(1 << 5)
 #define AXP_VBUS_IPSOUT			0x30
@@ -71,3 +72,4 @@
 #define AXP_GPIO_CTRL_INPUT		0x02 /* Input */
 #define AXP_GPIO_STATE			0x94
 #define AXP_GPIO_STATE_OFFSET		0
+#endif