multi-kernel.inc: drop use of KERNEL_CCSUFFIX to match oe-core
multi-kernel.inc: drop use of KERNEL_CCSUFFIX to match oe-core

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

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