pata_bk3710: clear status bits of BMISP on chipset initialization

Clear IORDYINT, INTRSTAT and DMAERROR bits of BMISP register
(value '1' needs to be written to the bit to clear it).
Suggested-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: NSekhar Nori <nsekhar@ti.com>

drivers/ata/pata_bk3710.c

@@ -276,7 +276,7 @@ static void pata_bk3710_chipinit(void __iomem *base)
 	 * (ATA_BMISP_INTRSTAT	, CLEAR)	|
 	 * (ATA_BMISP_DMAERROR	, CLEAR)
 	 */
-	iowrite16(0, base + BK3710_BMISP);
+	iowrite16(0xE, base + BK3710_BMISP);
 
 	pata_bk3710_setpiomode(base, NULL, 0, 600, 0);
 	pata_bk3710_setpiomode(base, NULL, 1, 600, 0);