linux: update to 4.9.4

mk/kernel-ver.mk

@@ -16,10 +16,10 @@ KERNEL_RELEASE:=	1
 KERNEL_VERSION:=	$(ADK_TARGET_KERNEL_GIT_VER)
 endif
 ifeq ($(ADK_TARGET_KERNEL_VERSION_4_9),y)
-KERNEL_FILE_VER:=	4.9.3
+KERNEL_FILE_VER:=	4.9.4
 KERNEL_RELEASE:=	1
 KERNEL_VERSION:=	$(KERNEL_FILE_VER)-$(KERNEL_RELEASE)
-KERNEL_HASH:=		74fbca6230477e208e55ef6f855ffc604c31f4a2feb1a136b1d9cbee16b0eca8
+KERNEL_HASH:=		9bddafb64cb15a4d3d0400364f3c9cb4b0d777978d5d81ade70c155e86cec084
 endif
 ifeq ($(ADK_TARGET_KERNEL_VERSION_4_4),y)
 KERNEL_FILE_VER:=	4.4.38

target/config/Config.in.kernelversion

@@ -24,7 +24,7 @@ config ADK_TARGET_KERNEL_VERSION_GIT
 	select ADK_TARGET_KERNEL_IMAGE if ADK_TARGET_SYSTEM_BEAGLEBONE_BLACK
 
 config ADK_TARGET_KERNEL_VERSION_4_9
-	bool "4.9.3"
+	bool "4.9.4"
 	depends on !ADK_TARGET_ARCH_CRIS
 	depends on !ADK_TARGET_ARCH_METAG
 	depends on !ADK_TARGET_ARCH_NDS32