thunderbolt: Compile on x86 only

So far Thunderbolt is (unfortunately) an Intel proprietary technology
that is only available on x86, so compiling on other arches is pointless
except for testing purposes.  Amend Kconfig accordingly.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/7dfda728d3ee8a33c80c49b224da7359c6015eea.1479456179.git.lukas@wunner.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/thunderbolt/Kconfig b/drivers/thunderbolt/Kconfig
index de5d27ec67d6..d35db16aa43f 100644
--- a/drivers/thunderbolt/Kconfig
+++ b/drivers/thunderbolt/Kconfig
@@ -1,6 +1,7 @@
 menuconfig THUNDERBOLT
         tristate "Thunderbolt support for Apple devices"
         depends on PCI
+        depends on X86 || COMPILE_TEST
         select APPLE_PROPERTIES if EFI_STUB && X86
         select CRC32
         help