message: Add .sbss section to .bss section
  This is a special section that RISC-V uses (see the comment in
  the Tock board linker)
diff: @@ -122,7 +122,7 @@ SECTIONS {
  {
  . = ALIGN(4); /* Make sure we're word-aligned here */
  _bss = .;
  - KEEP(*(.bss*))
  + KEEP(*(.bss* .sbss*))
  *(COMMON)
  . = ALIGN(4);
  } > SRAM
  