nds32.c (nds32_asm_function_prologue): Do not use nreverse() because it changes the content of original tree list.

2014-02-14  Chung-Ju Wu  <jasonwucj@gmail.com>

	* config/nds32/nds32.c (nds32_asm_function_prologue): Do not use
	nreverse() because it changes the content of original tree list.

From-SVN: r207777