fastbootd: Add command to remove GSI installs

Note: this only removes the bootable marker, since we're unable to
remove the userdata files within recovery.

Bug: 121210348
Test: fastboot gsi wipe
      fastboot gsi disable
Change-Id: I64fe848c787d426ae9d18a1557a9d6b340bfc2cf
diff --git a/fastboot/Android.bp b/fastboot/Android.bp
index ead2105..716fe95 100644
--- a/fastboot/Android.bp
+++ b/fastboot/Android.bp
@@ -132,6 +132,7 @@
         "libext2_uuid",
         "libext4_utils",
         "libfs_mgr",
+        "libgsi",
         "libhidlbase",
         "libhidltransport",
         "libhwbinder",