Blackfin: musb-boards: push clkin value to platform resources

In order to not touch the driver file for different xtal usage,
push the clkin value to board file and calculate the register
value instead of hardcoding it.

Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/mach-bf527/boards/ad7160eval.c b/arch/blackfin/mach-bf527/boards/ad7160eval.c
index 52295ff..6215de8 100644
--- a/arch/blackfin/mach-bf527/boards/ad7160eval.c
+++ b/arch/blackfin/mach-bf527/boards/ad7160eval.c
@@ -67,6 +67,7 @@
 	 * if it is the case.
 	 */
 	.gpio_vrsel_active	= 1,
+	.clkin          = 24,           /* musb CLKIN in MHZ */
 };
 
 static struct musb_hdrc_platform_data musb_plat = {