Move VMWARE_SETTINGS build configuration option from config/sideband.h
to a new config/settings.h.

Existing instances of config/local/sideband.h will not be affected,
since config.c still #includes config/sideband.h.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

Signed-off-by: Michael Brown <mcb30@ipxe.org>

Allow iPXE settings to be specified in the .vmx file via the VMware
GuestInfo mechanism.  For example:

    guestinfo.ipxe.filename = "http://boot.ipxe.org/demo/boot.php"
    guestinfo.ipxe.dns = "192.168.0.1"
    guestinfo.ipxe.net0.ip = "192.168.0.15"
    guestinfo.ipxe.net0.netmask = "255.255.255.0"
    guestinfo.ipxe.net0.gateway = "192.168.0.1"

Signed-off-by: Michael Brown <mcb30@ipxe.org>

Signed-off-by: Michael Brown <mcb30@ipxe.org>