linux-omap4: remove D_P = "-1" as it's the only kernel
linux-omap4: remove D_P = "-1" as it's the only kernel

Signed-off-by: Denys Dmytriyenko <e7d361c7f6c045f0c4fa54d2afc4a237f30bc767@denix.org>
Signed-off-by: Denys Dmytriyenko <d29de71aea38aad3a87d486929cb0aad173ae612@ti.com>

rcn-ee/meta-ti,Angstrom-distribution/meta-ti,mrchapp/meta-ti-amsdk,RedFIR/meta-ti,floft/meta-ti,mrchapp/meta-ti-amsdk,tylerwhall/meta-ti,tylerwhall/meta-ti,Angstrom-distribution/meta-ti,treideme/meta-ti-rt,rvfh/meta-ti,rcn-ee/meta-ti,jumpnow/meta-ti,tylerwhall/meta-ti,jumpnow/meta-ti,rcn-ee/meta-ti,joelagnel/meta-ti,RedFIR/meta-ti,rcn-ee/meta-ti,tylerwhall/meta-ti,joelagnel/meta-ti,smoosvi/Test4,floft/meta-ti,RedFIR/meta-ti,rvfh/meta-ti,joelagnel/meta-ti,treideme/meta-ti-rt,RedFIR/meta-ti,rvfh/meta-ti,joelagnel/meta-ti,smoosvi/Test4