leds: flash: leds-qcom-flash: Add PMI8998 support

Add subtype for the Qualcomm PMI8998 PMIC to support it besides the
PM8150 PMIC which has the same registers. Adjust the driver to recognize
both PMIC subtypes as a 3 channel LED driver.
Signed-off-by: Dylan Van Assche <me@dylanvanassche.be>
Link: https://lore.kernel.org/r/20230507172941.364852-2-me@dylanvanassche.beSigned-off-by: Lee Jones <lee@kernel.org>

drivers/leds/flash/leds-qcom-flash.c

@@ -18,7 +18,8 @@
 #define FLASH_TYPE_VAL			0x18
 
 #define FLASH_SUBTYPE_REG		0x05
-#define FLASH_SUBTYPE_3CH_VAL		0x04
+#define FLASH_SUBTYPE_3CH_PM8150_VAL	0x04
+#define FLASH_SUBTYPE_3CH_PMI8998_VAL	0x03
 #define FLASH_SUBTYPE_4CH_VAL		0x07
 
 #define FLASH_STS_3CH_OTST1		BIT(0)
@@ -682,7 +683,7 @@ static int qcom_flash_led_probe(struct platform_device *pdev)
 		return rc;
 	}
 
-	if (val == FLASH_SUBTYPE_3CH_VAL) {
+	if (val == FLASH_SUBTYPE_3CH_PM8150_VAL || val == FLASH_SUBTYPE_3CH_PMI8998_VAL) {
 		flash_data->hw_type = QCOM_MVFLASH_3CH;
 		flash_data->max_channels = 3;
 		regs = mvflash_3ch_regs;