zephyr-kernel.inc: also support Zephyr 1.7.0

Build kernel tests suite and kernel samples based on
PREFERRED_VERSION_zephyr-kernel

Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>

classes/zephyr-kernel-src.bbclass

@@ -0,0 +1,31 @@
+#Set relevant variables based on Zephyr kernel version
+
+PREFERRED_VERSION_zephyr-kernel ??= "1.6.0"
+
+SRCREV = "d4e799d77a36eaf6d678b357c207411ec32b2d62"
+SRC_URI = "git://gerrit.zephyrproject.org/r/zephyr.git;protocol=https;branch=v1.6.0-branch \
+          file://Makefile.toolchain.yocto "
+PV = "1.6.0"
+
+# FIXME: This points to 1.7.rc4
+SRCREV_1.7 = "3d2893cf85d51ceca04aa3bec2dd5fc77625ff81"
+SRC_URI_1.7 = "git://gerrit.zephyrproject.org/r/zephyr.git;protocol=https;branch=v1.7-branch\
+          file://Makefile.toolchain.yocto "
+PV_1.7 = "1.7.0"
+
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=fa818a259cbed7ce8bc2a22d35a464fc"
+
+ZEPHYR_TEST_SRCDIR = "tests/legacy/kernel/"
+
+python () {
+    src_pn = d.getVar('PREFERRED_VERSION_zephyr-kernel', True)
+    if src_pn == '1.6.0':
+        return
+    elif src_pn == '1.7.0':
+        d.setVar('SRC_URI',d.getVar('SRC_URI_1.7', True))
+        d.setVar('SRCREV',d.getVar('SRCREV_1.7', True))
+        d.setVar('PV',d.getVar('PV_1.7', True))
+    else:
+        bb.error("Unsupported Zephyr kernel version requested")
+}