ppp-2.4.5: remove `DP = "-1"`
ppp-2.4.5: remove `DP = "-1"`

Oe-core is using 2.4.5 and it works OK there.

Signed-off-by: Steffen Sledz <2e29ea0aa1503a723683d9a206c59d4c02f6bad0@dresearch-fe.de>
Acked-by: Paul Menzel <acd6d3b156327487a919475da61b8867f1e8b249@users.sourceforge.net>

JamesAng/oe,sentient-energy/emsw-oe-mirror,giobauermeister/openembedded,giobauermeister/openembedded,giobauermeister/openembedded,dellysunnymtech/sakoman-oe,openembedded/openembedded,JamesAng/oe,xifengchuo/openembedded,openembedded/openembedded,openembedded/openembedded,hulifox008/openembedded,openembedded/openembedded,JamesAng/goe,JamesAng/goe,giobauermeister/openembedded,dellysunnymtech/sakoman-oe,JamesAng/goe,giobauermeister/openembedded,xifengchuo/openembedded,giobauermeister/openembedded,xifengchuo/openembedded,giobauermeister/openembedded,JamesAng/oe,JamesAng/oe,dellysunnymtech/sakoman-oe,sentient-energy/emsw-oe-mirror,sentient-energy/emsw-oe-mirror,openembedded/openembedded,hulifox008/openembedded,JamesAng/goe,dellysunnymtech/sakoman-oe,JamesAng/goe,hulifox008/openembedded,hulifox008/openembedded,dellysunnymtech/sakoman-oe,openembedded/openembedded,dellysunnymtech/sakoman-oe,xifengchuo/openembedded,xifengchuo/openembedded,dellysunnymtech/sakoman-oe,dellysunnymtech/sakoman-oe,openembedded/openembedded,hulifox008/openembedded,giobauermeister/openembedded,openembedded/openembedded,dellysunnymtech/sakoman-oe,openembedded/openembedded,JamesAng/goe,JamesAng/goe,sentient-energy/emsw-oe-mirror,sentient-energy/emsw-oe-mirror,xifengchuo/openembedded,JamesAng/oe,xifengchuo/openembedded,hulifox008/openembedded,JamesAng/oe,xifengchuo/openembedded,openembedded/openembedded,hulifox008/openembedded,sentient-energy/emsw-oe-mirror,JamesAng/oe,openembedded/openembedded,giobauermeister/openembedded,sentient-energy/emsw-oe-mirror,xifengchuo/openembedded