Add a space between the root and append parameter, similar to
syslinux.bbclass, in creating the final grub.cfg.
Without this, the final kernel boot parameters will concatenate into
strings like root=/dev/ram0console=ttyS0...
(From OE-Core rev: a3b271ec8e1b2758e1e619e76646d22fd5777ce3)
Signed-off-by: Raymond Tan <raymond.tan@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>