drivers: mfd: axp192 fix EXTEN switch control value

Currently, EXTEN switch control (mapped to GPIO5) is always 0, due to a bug
in the shift value. This has been reported in Coverity CID 353647.

Following the AXP192-X Datasheet, the EXTEN switch control status is
given by bit 2 of the register 10h. If "GPIO5" corresponds to EXTEN
Switch control (AXP192_GPIO5_OUTPUT_MASK is 0x04U), then the shift
AXP192_GPIO5_OUTPUT_SHIFT should be 2, not 3.

Signed-off-by: Loic Domaigne <[email protected]>

Author: ljd42

drivers/mfd/mfd_axp192.c

@@ -100,7 +100,7 @@ struct mfd_axp192_config {
 
 #define AXP192_GPIO5_OUTPUT_MASK  0x04U
 #define AXP192_GPIO5_OUTPUT_VAL   0x04U
-#define AXP192_GPIO5_OUTPUT_SHIFT 3U
+#define AXP192_GPIO5_OUTPUT_SHIFT 2U
 
 struct mfd_axp192_data {
 	const struct device *gpio_mask_used[AXP192_GPIO_MAX_NUM];