lm3s: add LM3S811 eval board miniblink example

The LM3S811-EVB miniblink example is a copy of the LM3S3748-EVB miniblink
example.  Modifications:

 - rename lm3s3748-evb.ld to lm3s811-evb.ld and change RAM and ROM sizes
 - amend Makefile to reference the lm3s811-evb.ld linker script
 - amend miniblink.c to use PC5 instead of PF0 for the LED GPIO
 - amend README to reference LM3S811-EVB instead of LM3S3748-EVB

examples/lm3s/lm3s811-evb/lm3s811-evb.ld

@@ -0,0 +1,31 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Linker script for Luminary Micro (now TI) Stellaris LM3S811-EVB. */
+
+/* Define memory regions. */
+MEMORY
+{
+	rom (rx) : ORIGIN = 0x00000000, LENGTH = 64K
+	ram (rwx) : ORIGIN = 0x20000000, LENGTH = 8K
+}
+
+/* Include the common ld script. */
+INCLUDE libopencm3_lm3s.ld
+