Convert CONFIG_FSL_IIM to Kconfig

This converts the following to Kconfig:
   CONFIG_FSL_IIM

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index a6da6e2..fb3bbb3 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -267,6 +267,10 @@
 	  and a configurable timer for the supervisor function. The device is
 	  connected over I2C.
 
+config FSL_IIM
+	bool "Enable FSL IC Identification Module (IIM) driver"
+	depends on ARCH_MX31 || ARCH_MX5
+
 config FSL_SEC_MON
 	bool "Enable FSL SEC_MON Driver"
 	help