clang-tidy: Enable readability-static-accessed-through-instance check

Checks for member expressions that access static members through
instances, and replaces them with uses of the appropriate
qualified-id.

Signed-off-by: George Liu <liuxiwei@ieisystem.com>
Change-Id: I24de8ac8897de839594c6c71319febd0209bbc2e
diff --git a/manager/led-main.cpp b/manager/led-main.cpp
index 7791747..f671d5d 100644
--- a/manager/led-main.cpp
+++ b/manager/led-main.cpp
@@ -66,7 +66,7 @@
     phosphor::led::LampTest lampTest(event, manager);
 
     // Clear leds triggered by lamp test in previous boot
-    lampTest.clearLamps();
+    phosphor::led::LampTest::clearLamps();
 
     groups.emplace_back(std::make_unique<phosphor::led::Group>(
         bus, LAMP_TEST_OBJECT, manager, serializePtr,