[Feature][ZXW-88]merge P50 version

Only Configure: No
Affected branch: master
Affected module: unknown
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: No

Change-Id: I34667719d9e0e7e29e8e4368848601cde0a48408
diff --git a/ap/lib/libpng/libpng-1.6.37/scripts/libpng.pc.in b/ap/lib/libpng/libpng-1.6.37/scripts/libpng.pc.in
new file mode 100755
index 0000000..416fefe
--- /dev/null
+++ b/ap/lib/libpng/libpng-1.6.37/scripts/libpng.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@/libpng16
+
+Name: libpng
+Description: Loads and saves PNG files
+Version: 1.6.37
+Libs: -L${libdir} -lpng16
+Cflags: -I${includedir}