boot/xilinx-prebuilt: add hash for xilinx_v2025.1_update1 tag

Add the xilinx_v2025.1_update1 release tag hash to the xilinx-prebuilt
package, so that Xilinx boards can use this new release tag.

Signed-off-by: Neal Frager <neal.frager@amd.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

boot/xilinx-prebuilt/xilinx-prebuilt.hash

@@ -1,5 +1,6 @@
 # Locally calculated
 sha256  b9e2572885ad12243e10d48d9fccb24771a528b9f27aae1b29b45f0806ce9f1f  xilinx-prebuilt-xilinx_v2025.1.tar.gz
+sha256  48fd698a16f79b9a828c35ca5b2b50fe832149d1a2938c94c0bb6a2e249b0bed  xilinx-prebuilt-xilinx_v2025.1_update1.tar.gz
 
 # Locally calculated
 sha256  7b2074b607264a07347e1a7ef0323229585942793469f34b2cf9628f7623e05f  LICENSE