Change directory structure to align with Atmel softpack

This way we can easily check with 'diff' for differences in our code and
Atmel softpack.  Also, this layout is more suitable for building various
different firmware images (e.g. factory-test, dfu-loader, main
application) for a variety of different boards (simtrace, owhw, qmod).
diff --git a/firmware/libboard/common/resources/sam3s2/sram_samba.lds b/firmware/libboard/common/resources/sam3s2/sram_samba.lds
new file mode 100644
index 0000000..00040c8
--- /dev/null
+++ b/firmware/libboard/common/resources/sam3s2/sram_samba.lds
@@ -0,0 +1,91 @@
+/* ----------------------------------------------------------------------------
+ *         ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2009, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+/*------------------------------------------------------------------------------
+ *      Linker script for running in internal SRAM on the AT91SAM3S2
+ *----------------------------------------------------------------------------*/
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(entry)
+
+/* Memory Spaces Definitions */
+MEMORY
+{
+    romcodesram (W!RX) : ORIGIN = 0x20000000, LENGTH = 0x0800
+    sram (W!RX) : ORIGIN = 0x20000800, LENGTH = 0x00007800 /* sram, 32K - sizeof(romcodesram) */
+}
+
+/* Entry point */
+/*ENTRY (ResetException)*/
+
+SECTIONS
+{
+    /* startup code in the .isr_vector */
+    .text :
+    {
+        . = ALIGN(4);
+        _stext = .;
+        KEEP(*(.isr_vector .isr_vector.*))
+        *(.mailbox)
+        *(.text .text.*)
+        *(.rodata .rodata.*)
+        *(.glue_7)
+        *(.glue_7t)
+        *(.gcc_except_table)
+        *(.rodata .rodata*)
+        *(.gnu.linkonce.r.*)
+        . = ALIGN(4);
+        _etext = .;
+    } > sram
+
+    /* data */
+    .data :
+    {
+        . = ALIGN(4);
+        _sidata = .;
+        _sdata = .;
+
+        *(.data)
+        *(.data.*)
+        . = ALIGN(4);
+        _edata = .;
+    } > sram
+
+    .bss (NOLOAD) : {
+        _szero = .;
+        *(.bss)
+        . = ALIGN(4);
+        _ezero = .;
+    } >sram
+
+    /* Stack in SRAM */
+    _sstack = 0x20007FFC;
+}
+end = .;