edac: allow specifying the error count with fake_inject

In order to test if the error counters are properly incremented,
add a way to specify how many errors were generated by a trace.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/linux/edac.h b/include/linux/edac.h
index 6677af8..bab9f84 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -665,6 +665,7 @@
 	struct dentry *debugfs;
 	u8 fake_inject_layer[EDAC_MAX_LAYERS];
 	u32 fake_inject_ue;
+	u16 fake_inject_count;
 #endif
 };