minnowboard-max: Enable serial and HDMI consoles

Following what's done in Raspberry Pi's defconfigs, let's
unify the consoles in Minnowboard Max defconfigs, providing
consoles on HDMI and serial port.

[Peter: use tty1 like on rpi]
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

board/minnowboard/post-build.sh

@@ -3,3 +3,8 @@
 # $2    board name
 
 cp -v board/minnowboard/grub-${2}.cfg ${BINARIES_DIR}/efi-part/EFI/BOOT/grub.cfg
+
+# Add a console on tty1
+grep -qE '^tty1::' ${TARGET_DIR}/etc/inittab || \
+sed -i '/GENERIC_SERIAL/a\
+tty1::respawn:/sbin/getty -L  tty1 0 vt100 # HDMI console' ${TARGET_DIR}/etc/inittab

board/minnowboard/readme.txt

@@ -23,6 +23,9 @@ How to get started with the MinnowBoard (MAX)
 
   $ dd if=output/images/sdcard.img of=/dev/mmcblk0; sync
 
+  The system starts two consoles: one on the serial port
+  and one on HDMI.
+
 3. Enjoy
 
 Additional information about this board can be found at

configs/minnowboard_max-graphical_defconfig

@@ -9,7 +9,6 @@ BR2_TOOLCHAIN_BUILDROOT_CXX=y
 
 # System configuration
 BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
-BR2_TARGET_GENERIC_GETTY_PORT="tty0"
 BR2_ROOTFS_OVERLAY="board/minnowboard/fs-overlay-graphical"
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/minnowboard/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/minnowboard/post-image.sh"

configs/minnowboard_max_defconfig

@@ -3,7 +3,6 @@ BR2_x86_64=y
 BR2_x86_atom=y
 
 # Misc
-BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
 BR2_SYSTEM_DHCP="eth0"
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/minnowboard/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/minnowboard/post-image.sh"