Enable build of the new ecp_new.c file

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
diff --git a/library/Makefile b/library/Makefile
index fafcdda..766343a 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -102,6 +102,7 @@
 	     ecdsa.o \
 	     ecjpake.o \
 	     ecp.o \
+	     ecp_new.o \
 	     ecp_curves.o \
 	     entropy.o \
 	     entropy_poll.o \