msm: clock-8974: Add measurement-only clocks for CPUs and L2

The CPU and L2 clocks are not managed by the clock driver, but
are measurable using the clock driver's measurement hardware.
Add support for these measurement-only clocks.

Change-Id: Ia8ec54da3064d168f71ea863f60a34598cdc7a62
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
diff --git a/arch/arm/mach-msm/clock-local2.c b/arch/arm/mach-msm/clock-local2.c
index ef3ec3e..d5ee35b 100644
--- a/arch/arm/mach-msm/clock-local2.c
+++ b/arch/arm/mach-msm/clock-local2.c
@@ -580,6 +580,8 @@
 	return HANDOFF_ENABLED_CLK;
 }
 
+struct clk_ops clk_ops_empty;
+
 struct clk_ops clk_ops_rcg = {
 	.enable = rcg_clk_enable,
 	.set_rate = rcg_clk_set_rate,