staging: android: ion: Make ION_OF depend on OF_ADDRESS

The Ion platform code uses of_platform_device_create which has
dependencies on OF_ADDRESS. Depending on OF is not sufficient

Building sparc64:allmodconfig ... failed
--------------
Error log:
...
drivers/built-in.o: In function `ion_parse_dt':
(.text+0x11aa2c): undefined reference to `of_platform_device_create'

Add a dependency on OF_ADDRESS
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/ion/Kconfig

@@ -43,7 +43,7 @@ source "drivers/staging/android/ion/hisilicon/Kconfig"
 
 config ION_OF
 	bool "Devicetree support for Ion"
-	depends on ION && OF
+	depends on ION && OF_ADDRESS
 	help
 	  Provides base support for defining Ion heaps in devicetree
 	  and setting them up. Also includes functions for platforms