msm: clock: Expose parts of "clock.h" through <mach/clk-provider.h>

Expose the features of "clock.h" outside of mach-msm so that new clock
drivers leveraging the framework in mach-msm/clock.c can be implemented
outside of the mach-msm sub-architecture directory.

Change-Id: I3d07017388b28d4e5b6e930e7eda4f48e840714b
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-qsd8x50.c b/arch/arm/mach-msm/board-qsd8x50.c
index 4df4266..146c8a8 100644
--- a/arch/arm/mach-msm/board-qsd8x50.c
+++ b/arch/arm/mach-msm/board-qsd8x50.c
@@ -55,6 +55,7 @@
 #include "timer.h"
 #include "msm-keypad-devices.h"
 #include "acpuclock.h"
+#include "clock.h"
 #include "pm.h"
 #include "irq.h"
 #include "pm-boot.h"