board/zynqmp/kria/kv260/kv260.sh: fix u-boot.itb without CONFIG_MULTI_DTB_FIT option

This patch fixes the kv260.sh to generate a working u-boot.itb
now that the CONFIG_MULTI_DTB_FIT u-boot option is no longer used.

This is a follow-up fix of
515319b86f17ea5a2ce3e51c9063bac9f9e00a01 ("board/zynqmp/kria/kv260/uboot.fragment:
remove unnecessary CONFIG_MULTI_DTB_FIT option") to fix the build of:

  https://gitlab.com/buildroot.org/buildroot/-/jobs/3310463281

Signed-off-by: Neal Frager <neal.frager@amd.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit ec9519831ed5d5698c787b48d2ab952525cacb93)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

board/zynqmp/kria/kv260/kv260.sh

@@ -8,5 +8,5 @@
 
 UBOOT_DIR=$4
 
-fdtoverlay -o ${UBOOT_DIR}/fit-dtb.blob -i ${UBOOT_DIR}/arch/arm/dts/zynqmp-smk-k26-revA.dtb ${UBOOT_DIR}/arch/arm/dts/zynqmp-sck-kv-g-revB.dtbo
+fdtoverlay -o ${UBOOT_DIR}/arch/arm/dts/zynqmp-smk-k26-revA.dtb -i ${UBOOT_DIR}/arch/arm/dts/zynqmp-smk-k26-revA.dtb ${UBOOT_DIR}/arch/arm/dts/zynqmp-sck-kv-g-revB.dtbo
 ${UBOOT_DIR}/tools/mkimage -E -f ${UBOOT_DIR}/u-boot.its -B 0x8 ${BINARIES_DIR}/u-boot.itb