DEVELOPERS: add myself for clang and llvm

Signed-off-by: Joseph Kogut <joseph.kogut@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1059,8 +1059,10 @@ F:	package/rabbitmq-c/
 N:	Joseph Kogut <joseph.kogut@gmail.com>
 F:	package/at-spi2-atk/
 F:	package/at-spi2-core/
+F:	package/clang/
 F:	package/gconf/
 F:	package/libnss/
+F:	package/llvm/
 F:	package/python-cython/
 F:	package/python-raven/
 F:	package/python-schedule/