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>

diff --git a/drivers/thunderbolt/Kconfig b/drivers/thunderbolt/Kconfig
index de5d27e..d35db16 100644 (file)
--- 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