scsi: aacraid: Fix misspelling of _aac_rx_init()

Fixes the following W=1 kernel build warning(s):

drivers/scsi/aacraid/rx.c:544: warning: expecting prototype for aac_rx_init(). Prototype was for _aac_rx_init() instead

Link: https://lore.kernel.org/r/[e-mail]
Cc: Adaptec OEM Raid Solutions <[e-mail]>
Cc: "James E.J. Bottomley" <[e-mail]>
Cc: "Martin K. Petersen" <[e-mail]>
Cc: "PMC-Sierra, Inc" <[e-mail]>
Cc: [e-mail]
Signed-off-by: Lee Jones <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/aacraid/rx.c

···
 }
 
 /**
- *	aac_rx_init	-	initialize an i960 based AAC card
+ *	_aac_rx_init	-	initialize an i960 based AAC card
  *	@dev: device to configure
  *
  *	Allocate and set up resources for the i960 based AAC variants. The