linux: update kernel recipes

- remove older stable release recipes
- bump stable linux recipe to 4.14.2
- bump git linux recipe to 4.15-rc1
- rename linux to linux-mainline

Renaming kernel recipe from 'linux' to 'linux-mainline' is needed to
get ready for adding aarch64 support. The reason is in the value of
OVERRIDES environment variable. BitBake uses OVERRIDES to control what
variables are overridden after BitBake parses recipes and configuration
files. So packages names are not allowed to take values listed in
OVERRIDES. One of the OVERRIDES values is TARGET_OS:
  TARGET_OS = linux${LIBCEXTENSION}${ABIEXTENSION}
For arm architecture TARGET_OS = "linux-gnueabi". However for aarch64
architecture TARGET_OS = "linux". As a result, in the case of aarch64
kernel package can not be named 'linux'. This patch renames kernel
package name to 'linux-mainline' in order to be able to maintain the
same kernel recipes for both arm and aarch64 boards.

Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>

conf/machine/include/sunxi.inc

@@ -12,7 +12,7 @@ XSERVER = "xserver-xorg \
            xf86-input-mouse \
            xf86-input-keyboard"
 
-PREFERRED_PROVIDER_virtual/kernel ?= "linux"
+PREFERRED_PROVIDER_virtual/kernel ?= "linux-mainline"
 PREFERRED_PROVIDER_u-boot ?= "u-boot"
 PREFERRED_PROVIDER_virtual/bootloader ?= "u-boot"
 

recipes-kernel/linux/linux-mainline_4.14.2.bb

@@ -2,7 +2,7 @@ SECTION = "kernel"
 DESCRIPTION = "Mainline Linux kernel"
 LICENSE = "GPLv2"
 LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
-COMPATIBLE_MACHINE = "(sun4i|sun5i|sun7i)"
+COMPATIBLE_MACHINE = "(sun4i|sun5i|sun7i|sun8i)"
 
 inherit kernel
 
@@ -15,8 +15,8 @@ KERNEL_EXTRA_ARGS += "LOADADDR=${UBOOT_ENTRYPOINT}"
 
 S = "${WORKDIR}/linux-${PV}"
 	
-SRC_URI[md5sum] = "907447893b977c791934960a73b7fa00"
+SRC_URI[md5sum] = "0164a000bd7b302037de4e91dff3018b"
-SRC_URI[sha256sum] = "a09e95eb59de505cec462f3008148bcf7f5b8ed0e9e19f3e129d13a7a8d8f420"
+SRC_URI[sha256sum] = "e92690620a4e4811c6b37b2f1b6c9b32a1dde40aa12be6527c8dc215fb27464c"
 
 SRC_URI = "https://www.kernel.org/pub/linux/kernel/v4.x/linux-${PV}.tar.xz \
         file://defconfig \

recipes-kernel/linux/linux-mainline_git.bb

@@ -17,9 +17,9 @@ DEFAULT_PREFERENCE = "-1"
 
 KERNEL_EXTRA_ARGS += "LOADADDR=${UBOOT_ENTRYPOINT}"
 	
-# 4.14-rc3
+# 4.15-rc1
-PV = "4.14+git${SRCPV}"
+PV = "4.15+git${SRCPV}"
-SRCREV_pn-${PN} = "9e66317d3c92ddaab330c125dfe9d06eee268aff"
+SRCREV_pn-${PN} = "4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323"
 
 SRC_URI = "git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git;protocol=git;branch=master \
         file://defconfig \

recipes-kernel/linux/linux_4.4.89.bb

@@ -1,23 +0,0 @@
-SECTION = "kernel"
-DESCRIPTION = "Mainline Linux kernel"
-LICENSE = "GPLv2"
-LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
-COMPATIBLE_MACHINE = "(sun4i|sun5i|sun7i)"
-
-inherit kernel
-
-require linux.inc
-
-# Pull in the devicetree files into the rootfs
-RDEPENDS_kernel-base += "kernel-devicetree"
-
-KERNEL_EXTRA_ARGS += "LOADADDR=${UBOOT_ENTRYPOINT}"
-
-S = "${WORKDIR}/linux-${PV}"
-
-SRC_URI[md5sum] = "5588e6bed5235a97d305dd82d0d4758f"
-SRC_URI[sha256sum] = "a81d1b1306e4fddee5d6f7219090a616073b02f4069e44522a9c0454b17f2b67"
-
-SRC_URI = "https://www.kernel.org/pub/linux/kernel/v4.x/linux-${PV}.tar.xz \
-        file://defconfig \
-        "