HID: intel-ish-hid: Set ISH driver depends on x86

During ISH DMA enabling, some platforms (such as EHL) don't
support cache snooping, driver needs involve clflush_cache_range
API which isn't supported by all archs (such as ARM).

Considering ISH only exists on Intel platforms, add the dependence
in Kconfig to avoid build warnings or errors on other archs.
Acked-by: Pandruvada, Srinivas <srinivas.pandruvada@intel.com>
Signed-off-by: Even Xu <even.xu@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/intel-ish-hid/Kconfig

@@ -5,6 +5,7 @@ menu "Intel ISH HID support"
 config INTEL_ISH_HID
 	tristate "Intel Integrated Sensor Hub"
 	default n
+	depends on X86
 	select HID
 	help
 	  The Integrated Sensor Hub (ISH) enables the ability to offload