intel_th: Depend on HAS_IOMEM

This driver requires io memory to operate, so don't even consider it
for NO_IOMEM architectures.
Reported-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/hwtracing/intel_th/Kconfig

 config INTEL_TH
 	tristate "Intel(R) Trace Hub controller"
-	depends on HAS_DMA
+	depends on HAS_DMA && HAS_IOMEM
 	help
 	  Intel(R) Trace Hub (TH) is a set of hardware blocks (subdevices) that
 	  produce, switch and output trace data from multiple hardware and