linux: remove EOL 3.18.x, add LTS 3.16.x

mk/kernel-ver.mk

@@ -39,11 +39,11 @@ KERNEL_RELEASE:=	1
 KERNEL_VERSION:=	$(KERNEL_FILE_VER)-$(KERNEL_RELEASE)
 KERNEL_HASH:=		a8e82c8b1580ac4f8b176c714206498adedec9591eda48b895f6c61116d58854
 endif
-ifeq ($(ADK_TARGET_KERNEL_VERSION_3_18),y)
-KERNEL_FILE_VER:=	3.18.44
+ifeq ($(ADK_TARGET_KERNEL_VERSION_3_16),y)
+KERNEL_FILE_VER:=	3.16.43
 KERNEL_RELEASE:=	1
 KERNEL_VERSION:=	$(KERNEL_FILE_VER)-$(KERNEL_RELEASE)
-KERNEL_HASH:=		5661ccb8e45ec290d16d9617056d32f54bdea1357b1b3047c9c4042c78824db2
+KERNEL_HASH:=		93843c6a14e774327950159cade4c2c54ba105617275e4b595555ca9c34bc1e3
 endif
 ifeq ($(ADK_TARGET_KERNEL_VERSION_3_12),y)
 KERNEL_FILE_VER:=	3.12.69

target/config/Config.in.kernelversion

@@ -67,8 +67,8 @@ config ADK_TARGET_KERNEL_VERSION_4_1
 	depends on !ADK_TARGET_CPU_MIPS_MIPS32R6
 	depends on !ADK_TARGET_CPU_MIPS64_MIPS64R6
 
-config ADK_TARGET_KERNEL_VERSION_3_18
-	bool "3.18.44"
+config ADK_TARGET_KERNEL_VERSION_3_16
+	bool "3.16.43"
 	depends on !ADK_TARGET_ARCH_ARC
 	depends on !ADK_TARGET_ARCH_BFIN
 	depends on !ADK_TARGET_ARCH_H8300