armv8: emc2305: add support for fan controller

Add support for fan controller emc2305.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index 01c5068..a844b34 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -346,6 +346,12 @@
 	  cores, count the reserved ports. This will allocate enough memory
 	  in spin table to properly handle all cores.
 
+config EMC2305
+	bool "Fan controller"
+	help
+	 Enable the EMC2305 fan controller for configuration of fan
+	 speed.
+
 config SECURE_BOOT
 	bool "Secure Boot"
 	help