boot-directdisk.bbclass: Fix media generation problems with vmdk
The various populate methods need to accept a path as an argument vs
using hard expanded variables. In the case of the boot-directdisk
class it uses a different path for HDDDIR but it gets eclipsed by the
the class definition at the point in time ${HDDDIR} gets expanded.
The logical fix is to pass the arguments to the functions as opposed
to using globally expanded variables from the class definitions.
This patch changes 3 things:
1) syslinux_hddimg_populate takes an argument for the destination
2) syslinux_iso_populate takes an argument for the destination
3) populate is changed to boot_direct_populate because there
was a conflict with it overriding the populate in bootimg.bbclass
[YOCTO #3994]
Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
