v91.0-1 patches (grabbed from impish; might break)

deb_patches/armhf-reduce-linker-memory-use.patch

@@ -23,5 +23,6 @@ Author: Olivier Tilloy <olivier.tilloy@canonical.com>
 +    if host.cpu == "arm":
 +        flags.append("-Wl,--no-keep-memory")
  
-     if sysroot_path and multiarch_dir:
-         for d in ("lib", "usr/lib"):
+     # rpath-link is irrelevant to wasm, see for more info https://github.com/emscripten-core/emscripten/issues/11076.
+     if sysroot_path and multiarch_dir and target.os != "WASI":
+

deb_patches/fix-armhf-webrtc-build.patch

@@ -1,7 +1,7 @@
 --- a/third_party/libwebrtc/webrtc/system_wrappers/cpu_features_linux_gn/moz.build
 +++ b/third_party/libwebrtc/webrtc/system_wrappers/cpu_features_linux_gn/moz.build
 @@ -31,10 +31,6 @@ LOCAL_INCLUDES += [
-     "/third_party/libwebrtc/webrtc/"
+     "/tools/profiler/public"
  ]
  
 -UNIFIED_SOURCES += [