rename away from RPM

The SetPoint output from a thermal PID is likely RPM, and that value is
then fed into a fan controller PID as the set-point (unit: RPM).  This
does not have to be RPM, however.  Continue renaming variables and
methods to remove the explicit unit-naming.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I570dee0c688338f9a458cac7123314717bee2b42
diff --git a/test/zone_mock.hpp b/test/zone_mock.hpp
index a81ddeb..cd97f1f 100644
--- a/test/zone_mock.hpp
+++ b/test/zone_mock.hpp
@@ -14,7 +14,7 @@
     MOCK_METHOD1(getCachedValue, double(const std::string&));
     MOCK_METHOD1(addSetPoint, void(double));
     MOCK_METHOD1(addRPMCeiling, void(double));
-    MOCK_CONST_METHOD0(getMaxRPMRequest, double());
+    MOCK_CONST_METHOD0(getMaxSetPointRequest, double());
     MOCK_CONST_METHOD0(getFailSafeMode, bool());
     MOCK_CONST_METHOD0(getFailSafePercent, double());
     MOCK_METHOD1(getSensor, Sensor*(const std::string&));