linux-aspeed: Move to 4.19.15

This includes security and bug fixes from the 4.19.15 stable release.

(From meta-aspeed rev: 8a1859716ca01a0d50c23b5b42c995167b21b33b)

Change-Id: I0c293ef152e687ad18b1137b74541ce6ecd22349
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-aspeed/recipes-kernel/linux/linux-aspeed_git.bb b/meta-aspeed/recipes-kernel/linux/linux-aspeed_git.bb
index af6463e..19160e0 100644
--- a/meta-aspeed/recipes-kernel/linux/linux-aspeed_git.bb
+++ b/meta-aspeed/recipes-kernel/linux/linux-aspeed_git.bb
@@ -1,6 +1,6 @@
 KBRANCH ?= "dev-4.19"
-LINUX_VERSION ?= "4.19.14"
+LINUX_VERSION ?= "4.19.15"
 
-SRCREV="659bbe7f501770c49248b1c74a700342e8957273"
+SRCREV="4f641ea0f1ec3ec5fa667ee9825e8bb5967da8a0"
 
 require linux-aspeed.inc