makepanda: fix PhysX linker error on Windows

makepanda/makepanda.py

@@ -4955,7 +4955,7 @@ if (PkgSkip("PHYSX")==0):
   TargetAdd('libpandaphysx.dll', input='pandaphysx_pandaphysx.obj')
   TargetAdd('libpandaphysx.dll', input='p3physx_composite.obj')
   TargetAdd('libpandaphysx.dll', input=COMMON_PANDA_LIBS)
-  TargetAdd('libpandaphysx.dll', opts=['WINUSER', 'PHYSX', 'NOARCH:PPC'])
+  TargetAdd('libpandaphysx.dll', opts=['WINUSER', 'PHYSX', 'NOARCH:PPC', 'PYTHON'])
 
   OPTS=['DIR:panda/metalibs/pandaphysx', 'PHYSX', 'NOARCH:PPC']
   PyTargetAdd('physx_module.obj', input='libpandaphysx.in')