targets: zephyr: Update for Zephyr 2.x (#4731)

targets: zephyr: Update for Zephyr 2.2

Zephyr 2.2 removed some deprecated compatibility headers, use the new
location.

targets: zephyr: Update for Zephyr 2.3

Rename CONFIG_FLOAT -> CONFIG_FPU based on the change done in Zephyr 2.3.

JerryScript-DCO-1.0-Signed-off-by: Paul Sokolovsky paul.sokolovsky@linaro.org

targets: zephyr: Update CI and docs for Zephyr 2.6

And to the latest Zephyr SDK 0.13.0. arduino_101 board is no longer
supported by Zephyr 2.x, so replace it with qemu_x86 (i.e. QEMU
emulation target) in CI and with frdm_k64f in docs.

JerryScript-DCO-1.0-Signed-off-by: Paul Sokolovsky paul.sokolovsky@linaro.org

targets/zephyr/src/getline-zephyr.c

@@ -14,7 +14,7 @@
  */
 
 #include <zephyr.h>
-#include <uart.h>
+#include <drivers/uart.h>
 #include <drivers/console/console.h>
 #include <drivers/console/uart_console.h>
 #include "getline-zephyr.h"

targets/zephyr/src/main-zephyr.c

@@ -18,7 +18,7 @@
 #include <stdlib.h>
 
 #include <zephyr.h>
-#include <misc/printk.h>
+#include <sys/printk.h>
 #include "getline-zephyr.h"
 
 #include "jerryscript.h"