beaglebone.conf: configuration updates

* Use fbdev video driver for xserver-xorg
* Recommend installing device tree DTB files into rootfs /boot directory
* Switch back to uImage kernel format from zImage, as U-boot was not updated
  - default has changed to zImage in newer U-boot 2013.10+, but we use 2013.07
* Correct copy/paste typo in serial console

(From meta-yocto rev: 22f4158a8d64defe9acde902eda73ce2a380f10f)

Signed-off-by: Denys Dmytriyenko <denys@ti.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-yocto-bsp/conf/machine/beaglebone.conf

@@ -6,11 +6,10 @@ PREFERRED_PROVIDER_virtual/xserver ?= "xserver-xorg"
 XSERVER ?= "xserver-xorg \
            xf86-input-evdev \
            xf86-input-mouse \
-           xf86-video-omapfb \
+           xf86-video-fbdev \
            xf86-input-keyboard"
 
-# Ship all kernel modules by default
-MACHINE_EXTRA_RRECOMMENDS = " kernel-modules"
+MACHINE_EXTRA_RRECOMMENDS = " kernel-modules kernel-devicetree"
 
 EXTRA_IMAGEDEPENDS += "u-boot"
 
@@ -20,13 +19,14 @@ include conf/machine/include/tune-cortexa8.inc
 IMAGE_FSTYPES += "tar.bz2 jffs2"
 EXTRA_IMAGECMD_jffs2 = "-lnp "
 
-SERIAL_CONSOLE = "115200 ttyO2"
+SERIAL_CONSOLE = "115200 ttyO0"
 
 PREFERRED_PROVIDER_virtual/kernel ?= "linux-yocto"
 PREFERRED_VERSION_linux-yocto ?= "3.14%"
 
-KERNEL_IMAGETYPE = "zImage"
+KERNEL_IMAGETYPE = "uImage"
 KERNEL_DEVICETREE = "am335x-bone.dtb am335x-boneblack.dtb"
+KERNEL_EXTRA_ARGS += "LOADADDR=${UBOOT_ENTRYPOINT}"
 
 SPL_BINARY = "MLO"
 UBOOT_SUFFIX = "img"