i2c: ihs_i2c: Fix hold_bus control

Bus has to be held for repeated start regardless of
read/write access.

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
Acked-by: Heiko Schocher <hs@denx.de>
diff --git a/drivers/i2c/ihs_i2c.c b/drivers/i2c/ihs_i2c.c
index e001459..b05c15f 100644
--- a/drivers/i2c/ihs_i2c.c
+++ b/drivers/i2c/ihs_i2c.c
@@ -135,7 +135,7 @@
 	if (len <= 0)
 		return 1;
 
-	if (ihs_i2c_address(chip, addr, alen, !read))
+	if (ihs_i2c_address(chip, addr, alen, len))
 		return 1;
 
 	while (len) {