linux: ti-uio: remove KERNEL_DEVICETREE appends
linux: ti-uio: remove KERNEL_DEVICETREE appends

* KERNEL_DEVICETREE is now specified in the machine configuration and
  these appends have already been added there.
  - This removes the duplcitaion of these device trees in this list and
    thus resolves the "duplicate node name" failure during the fitImage
    creation.
* Extend am57xx-evm dts injection to dra7xx family
  - Now that KERNEL_DEVICETREE is specified in the machine
    configuration, am57xx-hs-evm inherits this list from am57xx-evm.
  - Extending these injectionsto the entire family allows these device
    trees to be availble for am57xx-hs-evm as well.
  - For dra7xx-evm and dra7xx-hs-evm, these device trees will not be
    built as they are not included in their KERNEL_DEVICETREE list.

Signed-off-by: Jacob Stiffler <0ec61db87821c27ca8ee6f3e24c6f93fdbb785d4@ti.com>
Signed-off-by: Denys Dmytriyenko <d29de71aea38aad3a87d486929cb0aad173ae612@ti.com>

rcn-ee/meta-ti,rcn-ee/meta-ti,rcn-ee/meta-ti,rcn-ee/meta-ti