Odroid HC2 does not have a console, use debug UART instead as the console

Makefile

@@ -226,7 +226,7 @@ odroidhc2-boot-cmd:
 define BOOTCMD_ODROIDHC2
 load mmc 0:2 $${kernel_addr_r} boot/zImage
 load mmc 0:2 $${fdt_addr_r} boot/machine.dtb
-setenv bootargs console=tty1 root=/dev/$(DISK)2 rootfstype=ext4 rootflags=discard rw rootwait elevator=noop quiet loglevel=3 systemd.show_status=1
+setenv bootargs console=ttySAC2,115200n8 root=/dev/$(DISK)2 rootfstype=ext4 rootflags=discard rw rootwait elevator=noop quiet loglevel=3 systemd.show_status=1
 bootz $${kernel_addr_r} - $${fdt_addr_r}
 endef
 export BOOTCMD_ODROIDHC2
@@ -273,7 +273,7 @@ define BOOTCMD_ODROIDHC2_MENDER
 run mender_setup
 load $${mender_uboot_root} $${kernel_addr_r} boot/zImage
 load $${mender_uboot_root} $${fdt_addr_r} boot/machine.dtb
-setenv bootargs console=tty1 panic=10 panic_on_oops=1 root=$${mender_kernel_root} rootfstype=ext4 ro rootwait elevator=noop quiet loglevel=3 systemd.show_status=1
+setenv bootargs console=ttySAC2,115200n8 panic=10 panic_on_oops=1 root=$${mender_kernel_root} rootfstype=ext4 ro rootwait elevator=noop quiet loglevel=3 systemd.show_status=1
 bootz $${kernel_addr_r} - $${fdt_addr_r}
 run mender_try_to_recover
 endef