print_rtx_function: update example in comment

print_rtx_function: update example in comment

The patch updates the example dump in the comment for
print_rtx_function to reflect various changes:
- r241593: addition of insn UIDs
- r241908: removal of trailing "(nil)" and other default values
- r242023: addition of "param" directives
- r243798: change of format of regnos in non-virtual pseudos
(from "$2" to "<2>")

gcc/ChangeLog:
	* print-rtl-function.c (print_rtx_function): Update
	example in comment to reflect current format.

From-SVN: r243812