linux-aspeed: Move to v5.14.15 stable release

This includes security and bug fixes from the 5.14.11 through to
5.14.15 stable releases.

Change-Id: Ida64acaa1f9c7c26d987fa7979ef29320924f2f0
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/meta-aspeed/recipes-kernel/linux/linux-aspeed_git.bb b/meta-aspeed/recipes-kernel/linux/linux-aspeed_git.bb
index 8ce07653..1661586 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-5.14"
-LINUX_VERSION ?= "5.14.11"
+LINUX_VERSION ?= "5.14.15"
 
-SRCREV="387b8b425339c97ef734aaeb6ec8d9d0ceded844"
+SRCREV="3760c1f873cc0b10a3a6fcbbaec16a54f131e227"
 
 require linux-aspeed.inc