Bump gdb to FSF gdb 10.1, with our gdb sim patched in.

Jim Wilson · Jim Wilson · commit 3ac2140ce561 · 2020-11-17T16:53:27.000-08:00
diff --git a/riscv-gdb b/riscv-gdb
@@ -1 +1 @@
-Subproject commit fec47beb8a1f0a6c4a6b0c548cded5711d0c27da
+Subproject commit f9922f1710db5d7a4e456c1a910c79b48d284c7c
