The controller has 3 mailbox channels, the last of which can be
used in Secure mode only.
+config PLATFORM_MHU
+ tristate "Platform MHU Mailbox"
+ depends on OF
+ depends on HAS_IOMEM
+ help
+ Say Y here if you want to build a platform specific variant MHU
+ controller driver.
+ The controller has a maximum of 3 mailbox channels, the last of
+ which can be used in Secure mode only.
+
config PL320_MBOX
bool "ARM PL320 Mailbox"
depends on ARM_AMBA