stm32f2x: Detect STM32F42x rev Y

Change-Id: Iaf94f6dda0686cce56be77431bbb961bfd5e8d14
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/1688
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

src/flash/nor/stm32f2x.c

@@ -914,6 +914,10 @@ static int get_stm32x_info(struct flash_bank *bank, char *buf, int buf_size)
 		case 0x1001:
 			rev_str = "Z";
 			break;
+
+		case 0x1003:
+			rev_str = "Y";
+			break;
 		}
 		break;