WHENCE: ti-sysfw: Fix a typo in am62x stub name

For ti-sysfw component, ti-fs-stub-firmware-am62x-gp-signed.bin was mentioned
twice and the unsigned file was not mentioned. Fixing the typo.

Signed-off-by: Vishal Mahaveer <vishalm@ti.com>

WHENCE

@@ -5289,11 +5289,11 @@ File: ti-sysfw/ti-sci-firmware-am64x_sr2-hs-fs-cert.bin
 File: ti-sysfw/ti-sci-firmware-am64x_sr2-hs-fs-enc.bin
 Version: v09.00.02
 
+File: ti-sysfw/ti-fs-stub-firmware-am62x-gp.bin
 File: ti-sysfw/ti-fs-stub-firmware-am62x-gp-signed.bin
 File: ti-sysfw/ti-fs-stub-firmware-am62x-hs-cert.bin
 File: ti-sysfw/ti-fs-stub-firmware-am62x-hs-enc.bin
 File: ti-sysfw/ti-fs-firmware-am62x-gp.bin
-File: ti-sysfw/ti-fs-stub-firmware-am62x-gp-signed.bin
 File: ti-sysfw/ti-fs-firmware-am62x-hs-cert.bin
 File: ti-sysfw/ti-fs-firmware-am62x-hs-enc.bin
 File: ti-sysfw/ti-fs-firmware-am62x-hs-fs-cert.bin