sdcard_image-rpi.bbclass: copy the DTB files with canonical name
sdcard_image-rpi.bbclass: copy the DTB files with canonical name

* instead of using ${KERNEL_IMAGETYPE}-${DTB_BASE_NAME}.dtb use
  the entries from KERNEL_DEVICETREE
* basename is still needed because raspberrypi3-64 is using:
  broadcom/bcm2710-rpi-3-b.dtb and the ${DEPLOY_DIR_IMAGE} doesn't
  contain any directories for DTBs and we cannot remove broadcom/
  prefix, because then "make bcm2710-rpi-3-b.dtb" from
  kernel-devicetree.bbclass will fail with:
  make[3]: *** No rule to make target 'arch/arm64/boot/dts/bcm2710-rpi-3-b.dtb'.  Stop.

Signed-off-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@gmail.com>

leon-anavi/meta-raspberrypi,schnitzeltony/meta-raspberrypi,leon-anavi/meta-raspberrypi,schnitzeltony/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,kraj/meta-raspberrypi,kraj/meta-raspberrypi,leon-anavi/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,kraj/meta-raspberrypi,schnitzeltony/meta-raspberrypi,agherzan/meta-raspberrypi