Input: i8042-io - fix up region handling on MIPS

i8042_platform_init() skips reguest_region() on MIPS, but in
i8042_platform_exit() release_region() is still called. Fix this by
reserving the region also on MIPS.

The patch eliminates the following error message seen on MIPS:

[ 2.112000] Trying to free nonexistent resource <0000000000000060-000000000000006f>

Signed-off-by: Aaro Koskinen <[e-mail]>
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/serio/i8042-io.h

···
 	if (check_legacy_ioport(I8042_DATA_REG))
 		return -ENODEV;
 #endif
-#if !defined(__sh__) && !defined(__alpha__) && !defined(__mips__)
+#if !defined(__sh__) && !defined(__alpha__)
 	if (!request_region(I8042_DATA_REG, 16, "i8042"))
 		return -EBUSY;
 #endif