MAINTAINERS: ccree: add co-maintainer

Add Yael Chemla as co-maintainer of Arm TrustZone CryptoCell REE
driver.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/MAINTAINERS b/MAINTAINERS
index f485597..ab42acb 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3388,6 +3388,7 @@
 F:	Documentation/devicetree/bindings/net/ieee802154/cc2520.txt
 
 CCREE ARM TRUSTZONE CRYPTOCELL REE DRIVER
+M:	Yael Chemla <yael.chemla@foss.arm.com>
 M:	Gilad Ben-Yossef <gilad@benyossef.com>
 L:	linux-crypto@vger.kernel.org
 S:	Supported