resources: Revert "Fix typo in 'arm64-bootloader-emm' url"

This reverts commit 2f47d3ce0dcfb4676097e07fe862be1c4017c1ad.

Change-Id: I958a13a704a7de47348722d361831548986f7737
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-resources/+/59769
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
diff --git a/resources.json b/resources.json
index 188ec01..84aa73d 100644
--- a/resources.json
+++ b/resources.json
@@ -172,7 +172,7 @@
             "architecture": "ARM",
             "is_zipped" : false,
             "md5sum" : "4ac285462723f2574c71526ae6717d24",
-            "url": "{url_base}/bootloaders/arm/arm64-bootloader-20220426",
+            "url": "{url_base}/bootloaders/arm/arm64-bootloader-20220425",
             "source" : null
         },