rpi-bootfiles: Rename recipe to avoid ambiguity

The name `bootfiles` is too generic, we should use `rpi-bootfiles`
instead.

Signed-off-by: Paul Barker <pbarker@konsulko.com>
(cherry picked from commit ba3a417fbb)
Signed-off-by: Ricardo Salveti <ricardo@foundries.io>

conf/machine/include/rpi-base.inc

@@ -123,7 +123,7 @@ IMAGE_BOOT_FILES ?= "${BOOTFILES_DIR_NAME}/* \
                     '${KERNEL_IMAGETYPE};${SDIMG_KERNELIMAGE}', d)} \
                  "
 do_image_wic[depends] += " \
-    bootfiles:do_deploy \
+    rpi-bootfiles:do_deploy \
     ${@bb.utils.contains('RPI_USE_U_BOOT', '1', 'u-boot:do_deploy', '',d)} \
     "