Add a 'hybris-watch' machine configuration include file that factorizes code...

Add a 'hybris-watch' machine configuration include file that factorizes code between each watch configuration. Also include a new PREFERRED_PROVIDER_virtual/mesa line to close https://github.com/AsteroidOS/asteroid/issues/76

conf/machine/include/hybris-watch.inc

+MACHINE_FEATURES = "alsa bluetooth usbgadget usbhost ext2"
+
+SERIAL_CONSOLE = "115200 ttyHSL0"
+
+PREFERRED_PROVIDER_virtual/mesa = "libhybris"
+PREFERRED_PROVIDER_virtual/egl = "libhybris"
+PREFERRED_PROVIDER_virtual/libgles1 = "libhybris"
+PREFERRED_PROVIDER_virtual/libgles2 = "libhybris"
+
+PREFERRED_PROVIDER_virtual/android-headers = "android"
+PREFERRED_PROVIDER_virtual/android-system-image = "android"
+
+KERNEL_IMAGETYPE = "zImage-dtb"
+IMAGE_FSTYPES += "ext4"
+IMAGE_ROOTFS_ALIGNMENT="4"
+
+IMAGE_INSTALL += "android-tools android-system"