applicom.c: fix apparently-broken code in do_ac_read()

The code scriblles over a local pointer whereas it appears to be trying
to write to the memory at which that pointer points.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11397

Nobody we know can test this change.

Reported-by: Zvonimir Rakamaric <[e-mail]>
Cc: Jesse Barnes <[e-mail]>
Cc: David Woodhouse <[e-mail]>
Cc: Jiri Slaby <[e-mail]>
Cc: Alan Cox <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/char/applicom.c

···
 		struct st_ram_io *st_loc, struct mailbox *mailbox)
 {
 	void __iomem *from = apbs[IndexCard].RamIO + RAM_TO_PC;
-	unsigned char *to = (unsigned char *)&mailbox;
+	unsigned char *to = (unsigned char *)mailbox;
 #ifdef DEBUG
 	int c;
 #endif