fix drivers/ata/sata_fsl.c double-decl

drivers/ata/sata_fsl.c: In function 'sata_fsl_fill_sg':
drivers/ata/sata_fsl.c:337: error: redeclaration of 'si' with no linkage
drivers/ata/sata_fsl.c:326: error: previous declaration of 'si' was here

Reported-by: Olof Johansson <olof@lixom.net>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/sata_fsl.c

@@ -323,7 +323,6 @@ static unsigned int sata_fsl_fill_sg(struct ata_queued_cmd *qc, void *cmd_desc,
 	struct scatterlist *sg;
 	unsigned int num_prde = 0;
 	u32 ttl_dwords = 0;
-	unsigned int si;
 
 	/*
 	 * NOTE : direct & indirect prdt's are contigiously allocated