Add new powrprof.h header.

diff --git a/include/Makefile.in b/include/Makefile.in
index 822e18f..fb17cbe 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -184,6 +184,7 @@
 	oledlg.h \
 	pktdef.h \
 	poppack.h \
+	powrprof.h \
 	prsht.h \
 	psapi.h \
 	pshpack1.h \