[ARM] 2866/1: add i.MX set_mctrl / get_mctrl functions

Patch from Sascha Hauer

This patch adds support for setting and getting RTS / CTS via
set_mtctrl / get_mctrl functions.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/misc/Kconfig

@@ -6,7 +6,7 @@ menu "Misc devices"
 
 config IBM_ASM
 	tristate "Device driver for IBM RSA service processor"
-	depends on X86 && PCI && EXPERIMENTAL
+	depends on X86 && PCI && EXPERIMENTAL && BROKEN
 	---help---
 	  This option enables device driver support for in-band access to the
 	  IBM RSA (Condor) service processor in eServer xSeries systems.