meta-aspeed: Add reviewers for u-boot

Signed-off-by: Joel Stanley <joel@jms.id.au>
Change-Id: If2b06db8d5ca3f07ff03b0c397e8476ec28587b1
diff --git a/meta-aspeed/OWNERS b/meta-aspeed/OWNERS
index 0a7814c..90d87c0 100644
--- a/meta-aspeed/OWNERS
+++ b/meta-aspeed/OWNERS
@@ -1,3 +1,9 @@
 owners:
 - bradleyb@fuzziesquirrel.com
 - joel@jms.id.au
+
+matchers:
+- exact: recipes-bsp/u-boot
+  reviewers:
+   - chiawei_wang@aspeedtech.com
+   - zweiss@equinix.com