[PATCH] mailbox: ARM_MHU_V3 should depend on ARM64

[Geert Uytterhoeven]

The ARM MHUv3 controller is only present on ARM64 SoCs.  Hence add a
dependency on ARM64, to prevent asking the user about this driver when
configuring a kernel for a different architecture than ARM64.

Fixes: ca1a8680b134b5e6 ("mailbox: arm_mhuv3: Add driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
---
The MHUv3 documentation is unclear about whether this can be present
only on ARM64, or also on ARM.
Googling 'site:arm.com MHUv3 "aarch32"' shows no results.
Googling 'site:arm.com MHUv3 "aarch64"' does show results.
---
 drivers/mailbox/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig
index 3b8842c4a3401579..8d4d1cbb1d4ca625 100644
--- a/drivers/mailbox/Kconfig
+++ b/drivers/mailbox/Kconfig
@@ -25,6 +25,7 @@ config ARM_MHU_V2
 
 config ARM_MHU_V3
 	tristate "ARM MHUv3 Mailbox"
+	depends on ARM64 || COMPILE_TEST
 	depends on HAS_IOMEM || COMPILE_TEST
 	depends on OF
 	help
-- 
2.34.1