tree-wide: Assorted spelling fixes

In particular, several occurances of funny versions of 'success',
'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address',
'beginning', 'desirable', 'separate' and 'necessary' are fixed.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Joe Perches <joe@perches.com>
Cc: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/usb/musb/musb_regs.h b/drivers/usb/musb/musb_regs.h
index 473a94e..7c14d5c 100644
--- a/drivers/usb/musb/musb_regs.h
+++ b/drivers/usb/musb/musb_regs.h
@@ -436,7 +436,7 @@
 #define MUSB_FLAT_OFFSET(_epnum, _offset)	\
 	(USB_OFFSET(USB_EP_NI0_TXMAXP) + (0x40 * (_epnum)) + (_offset))
 
-/* Not implemented - HW has seperate Tx/Rx FIFO */
+/* Not implemented - HW has separate Tx/Rx FIFO */
 #define MUSB_TXCSR_MODE			0x0000
 
 static inline void musb_write_txfifosz(void __iomem *mbase, u8 c_size)