Fix the order of SHLIB_RODATA_ADDR in elf.sc

Fix the order of SHLIB_RODATA_ADDR in elf.sc

elf.sc has

  if test -n "${RODATA_ADDR}"; then
    RODATA_ADDR="\
SEGMENT_START(\"rodata-segment\", ${RODATA_ADDR}) + SIZEOF_HEADERS"
  else
    RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
    ^^^^^^^^^^ Set RODATA_ADDR
    RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${RODATA_ADDR})"
    ^^^^^^^^^^ Set RODATA_ADDR with ${RODATA_ADDR}
  fi
  if test -n "${SHLIB_RODATA_ADDR}"; then
    SHLIB_RODATA_ADDR="\
SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR}) + SIZEOF_HEADERS"
  else
    SHLIB_RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR})"
    ^^^^^^^^^^ Set SHLIB_RODATA_ADDR
    SHLIB_RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
    ^^^^^^^^^^ Override SHLIB_RODATA_ADDR
  fi

The order should be:

  if test -n "${SHLIB_RODATA_ADDR}"; then
    SHLIB_RODATA_ADDR="\
SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR}) + SIZEOF_HEADERS"
  else
    SHLIB_RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
    SHLIB_RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR})"
  fi

	PR ld/22696
	* scripttempl/elf.sc: Fix the order of SHLIB_RODATA_ADDR.