kgdb: add HAS_IOPORT dependency

In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at
compile time.  We thus need to add HAS_IOPORT as dependency for those
drivers using them.

Link: https://lkml.kernel.org/r/[email protected]
Co-developed-by: Arnd Bergmann <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Niklas Schnelle <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: niklas88

lib/Kconfig.kgdb

@@ -122,6 +122,7 @@ config KDB_DEFAULT_ENABLE
 config KDB_KEYBOARD
 	bool "KGDB_KDB: keyboard as input device"
 	depends on VT && KGDB_KDB && !PARISC
+	depends on HAS_IOPORT
 	default n
 	help
 	  KDB can use a PS/2 type keyboard for an input device