mfd: intel_soc_pmic_chtwc: Register LED child device

Add MFD cell for LEDs driver to the Intel Cherry Trail Whiskey Cove PMIC
mfd device driver.

Signed-off-by: Yauhen Kharuzhy <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/intel_soc_pmic_chtwc.c

···
 		.resources = cht_wc_ext_charger_resources,
 	},
 	{	.name = "cht_wcove_region", },
+	{	.name = "cht_wcove_leds", },
 };
 
 /*