libmediadrm: add libmediadrm config [1/1]

PD#SWPL-1586

Problem:
libmediadrm is required by some application

Solution:
add libmediadrm config

Verify:
local

Change-Id: I65bd2e472de4206ee0a0daf257e14fa5190e37c7
Signed-off-by: Daogao Xu <daogao.xu@amlogic.com>
diff --git a/Config.in b/Config.in
index 727d979..b0cec47 100755
--- a/Config.in
+++ b/Config.in
@@ -16,7 +16,8 @@
 
 # secure video firmware load 
 source "../multimedia/secfirmload/Config.in"
-
 # hal audio
 source "../multimedia/aml_halaudio/Config.in"
+# drm prebuild
+source "../multimedia/libmediadrm/Config.in"
 endmenu