Nios II - Fix I/O Macros and mini-app stubs

-Fix asm/io.h macros
  -Eliminate use of CACHE_BYPASS in cpu code
  -Eliminate assembler warnings
  -Fix mini-app stubs and force no small data
  Patch by Scott McNutt, 08 Jun 2006

examples/Makefile

@@ -42,7 +42,7 @@ LOAD_ADDR = 0x00800000 -L $(gcclibdir)/m32 -T nios.lds
 endif
 
 ifeq ($(ARCH),nios2)
-LOAD_ADDR = 0x00800000 -L $(gcclibdir) -T nios2.lds
+LOAD_ADDR = 0x02000000 -L $(gcclibdir) -T nios2.lds
 endif
 
 ifeq ($(ARCH),m68k)

examples/stubs.c

@@ -92,7 +92,7 @@ gd_t *global_data;
 #x ":\n"				\
 "	movhi	r8, %%hi(%0)\n"		\
 "	ori	r8, r0, %%lo(%0)\n"	\
-"	add	r8, r0, r15\n"		\
+"	add	r8, r8, r15\n"		\
 "	ldw	r8, 0(r8)\n"		\
 "	ldw	r8, %1(r8)\n"		\
 "	jmp	r8\n"			\