Add missing library dependency for P3D plugin

Summary:
There were a couple of unresolved symbols when building swift with 64 bit
MSVC. Those are resolved by linking against Advapi32.

Reviewers: #swift_pilot_client, msutcliffe

Reviewed By: #swift_pilot_client, msutcliffe

Subscribers: jenkins

Differential Revision: https://dev.swift-project.org/D37

src/plugins/simulator/p3d/p3d.pro

@@ -26,6 +26,7 @@ equals(WORD_SIZE,32) {
 LIBS += -lsimulatorfscommon -lsimulatorfsxcommon -lfsuipc
 equals(WORD_SIZE,64) {
     LIBS *= -L$$EXTERNALS_LIB_DIR/P3D-v4
+    LIBS *= -lAdvapi32
     CONFIG(debug, debug|release): LIBS *= -lSimConnectDebug
     else:                         LIBS *= -lSimConnect
 }