u-boot: Move fw_env.config to u-boot append

The u-boot-env is provided by u-boot recipe and not by libubootenv, so
right recipe to append is the u-boot.

Adding the rpi-u-boot-scr in DEPENDS variable is wrong because it is
forcing rpi-u-boot-scr to be a dependency, but it'll fail if I have
another recipe that provides bootscript, once both recipes provide the
same file. The default value of u-boot-default-script is rpi-u-boot-scr,
so right way is to use u-boot-default-script and change the
PREFERRED_PROVIDER_u-boot-default-script if needed.

Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
(cherry picked from commit fc72c06141)

recipes-bsp/u-boot/libubootenv_%.bbappend

@@ -1,12 +0,0 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
-
-SRC_URI_append_rpi = " \
-    file://fw_env.config \
-"
-
-DEPENDS_append_rpi = " rpi-u-boot-scr"
-
-do_install_append_rpi () {
-    install -d ${D}${sysconfdir}
-    install -m 0644 ${WORKDIR}/fw_env.config ${D}${sysconfdir}/fw_env.config
-}

recipes-bsp/u-boot/u-boot_%.bbappend

@@ -1,5 +1,13 @@
 FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
 
+SRC_URI_append_rpi = " \
+    file://fw_env.config \
+"
+
 DEPENDS_append_rpi = " u-boot-default-script"
 
 SRC_URI_append_raspberrypi-cm3 = " file://0001-dm-core-Move-ofdata_to_platdata-call-earlier.patch"
+do_install_append_rpi () {
+    install -d ${D}${sysconfdir}
+    install -m 0644 ${WORKDIR}/fw_env.config ${D}${sysconfdir}/fw_env.config
+}