drivers: mailbox: Make ti-msgmr driver depend on ARCH_K3

ti-msgmr driver can support K3 platforms as well.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

drivers/mailbox/Kconfig

@@ -105,12 +105,12 @@ config STI_MBOX
 
 config TI_MESSAGE_MANAGER
 	tristate "Texas Instruments Message Manager Driver"
-	depends on ARCH_KEYSTONE
+	depends on ARCH_KEYSTONE || ARCH_K3
 	help
 	  An implementation of Message Manager slave driver for Keystone
-	  architecture SoCs from Texas Instruments. Message Manager is a
-	  communication entity found on few of Texas Instrument's keystone
-	  architecture SoCs. These may be used for communication between
+	  and K3 architecture SoCs from Texas Instruments. Message Manager
+	  is a communication entity found on few of Texas Instrument's keystone
+	  and K3 architecture SoCs. These may be used for communication between
 	  multiple processors within the SoC. Select this driver if your
 	  platform has support for the hardware block.