Fix up trivial spelling errors ('taht' -> 'that')

Pointed out by Lucas who found the new one in a comment in
setup_percpu.c. And then I fixed the others that I grepped
for.

Reported-by: Lucas <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/x86/kernel/setup_percpu.c

···
 		per_cpu(x86_cpu_to_node_map, cpu) =
 			early_per_cpu_map(x86_cpu_to_node_map, cpu);
 		/*
-		 * Ensure taht the boot cpu numa_node is correct when the boot
+		 * Ensure that the boot cpu numa_node is correct when the boot
 		 * cpu is on a node that doesn't have memory installed.
 		 * Also cpu_up() will call cpu_to_node() for APs when
 		 * MEMORY_HOTPLUG is defined, before per_cpu(numa_node) is set

drivers/usb/gadget/f_fs.c

···
 	 * handling setup requests immidiatelly user space may be so
 	 * slow that another setup will be sent to the gadget but this
 	 * time not to us but another function and then there could be
-	 * a race.  Is taht the case? Or maybe we can use cdev->req
+	 * a race.  Is that the case? Or maybe we can use cdev->req
 	 * after all, maybe we just need some spinlock for that? */
 	struct usb_request		*ep0req;		/* P: mutex */
 	struct completion		ep0req_completion;	/* P: mutex */

drivers/video/aty/radeon_pm.c

···
 		}
 
 #if 0
-		/* Power down TV DAC, taht saves a significant amount of power,
+		/* Power down TV DAC, that saves a significant amount of power,
 		 * we'll have something better once we actually have some TVOut
 		 * support
 		 */

fs/jffs2/xattr.c

···
 
 static int check_xattr_ref_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic)
 {
-	/* success of check_xattr_ref_inode() means taht inode (ic) dose not have
+	/* success of check_xattr_ref_inode() means that inode (ic) dose not have
 	 * duplicate name/value pairs. If duplicate name/value pair would be found,
 	 * one will be removed.
 	 */