treewide: replace static mentions of repo name with dynamic ones

This does change the CONFIG_QEMU_FIRMWAREPATH to "/nonexistant", but
since we are using OVMF everywhere anyway this should behave the same.

Closes monogon-dev/monogon#343

Change-Id: I865e5ba5e62579c3ff1f31a25e46cbcb78dba688
Reviewed-on: https://review.monogon.dev/c/monogon/+/3450
Reviewed-by: Lorenz Brun <lorenz@monogon.tech>
Tested-by: Jenkins CI
diff --git a/third_party/qemu/patches/pregenerated_config_files.patch b/third_party/qemu/patches/pregenerated_config_files.patch
index 8facc61..9f72837 100644
--- a/third_party/qemu/patches/pregenerated_config_files.patch
+++ b/third_party/qemu/patches/pregenerated_config_files.patch
@@ -198,7 +198,7 @@
 +
 +#define CONFIG_QEMU_DESKTOPDIR "/nonexistent"
 +
-+#define CONFIG_QEMU_FIRMWAREPATH "external/_main~_repo_rules~qemu/pc-bios"
++#define CONFIG_QEMU_FIRMWAREPATH "/nonexistent"
 +
 +#define CONFIG_QEMU_HELPERDIR "/nonexistent"
 +