linux-aspeed: Move to 5.2.8

This includes security and bug fixes from the 5.2.8 stable release.

Change-Id: Ibac0d6fc18ee52769be6d421871e1797df989613
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/recipes-kernel/linux/linux-aspeed_git.bb b/recipes-kernel/linux/linux-aspeed_git.bb
index 3c6ca4b..e181683 100644
--- a/recipes-kernel/linux/linux-aspeed_git.bb
+++ b/recipes-kernel/linux/linux-aspeed_git.bb
@@ -1,6 +1,6 @@
 KBRANCH ?= "dev-5.2"
-LINUX_VERSION ?= "5.2.7"
+LINUX_VERSION ?= "5.2.8"
 
-SRCREV="dbfa2402dff62fedb12d61c66fb1f94e5f9c3fee"
+SRCREV="6b11565cce36540fedb6f11b25647ce12b952b7e"
 
 require linux-aspeed.inc