libopencm3-examples: Updated to use same loc3

ChuckM · ChuckM · commit 026824aa6533 · 2015-12-27T13:00:20.000-08:00
Insured the sub module was at commit #e8a4a37 to pick up the RCC_LSE
change.
diff --git a/libopencm3 b/libopencm3
@@ -1 +1 @@
-Subproject commit 43e66927fc48ffb9ad90fec275290ea7c0f88781
+Subproject commit e8a4a37b9c2f1f1cfad4d1f92b8151dac3f113c0
