SAME54 Ethernet driver

Add tls_builtin.c

examples/microchip/same54/link.ld

@@ -0,0 +1,25 @@
+ENTRY(Reset_Handler);
+MEMORY {
+  flash(rx) : ORIGIN = 0x00000000, LENGTH = 1024k
+  sram(rwx) : ORIGIN = 0x20000000, LENGTH = 256k
+}
+_estack     = ORIGIN(sram) + LENGTH(sram);
+
+SECTIONS {
+  .vectors  : { FILL(256) KEEP(*(.vectors)) } > flash
+  .text     : { *(.text*) }         > flash
+  .rodata   : { *(.rodata*) }       > flash
+
+  .data : {
+    _sdata = .;
+    *(.first_data)
+    *(.data SORT(.data.*))
+    _edata = .;
+  } > sram AT > flash
+  _sidata = LOADADDR(.data);
+
+  .bss : { _sbss = .; *(.bss SORT(.bss.*) COMMON) _ebss = .; } > sram
+
+  . = ALIGN(8);
+  _end = .;
+}