ipmi/bt-bmc: add a dependency on ARCH_ASPEED

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/Kconfig

@@ -78,6 +78,7 @@ config IPMI_POWEROFF
 endif # IPMI_HANDLER
 
 config ASPEED_BT_IPMI_BMC
+	depends on ARCH_ASPEED
 	tristate "BT IPMI bmc driver"
 	help
 	  Provides a driver for the BT (Block Transfer) IPMI interface