Mark the function called by the MIPS .init/.fini sequence with .local.

As with r328939 we need to mark local symbols as such. Without this the
assembly parser treats the symbols as global and created relocations
against these private symbols.

MFC with:	r339738
Sponsored by:	DARPA, AFRL

lib/csu/mips/crt.h

@@ -36,6 +36,7 @@
     "1:				\n"					\
     ".cpload $ra		\n"					\
     ".set reorder		\n"					\
+    ".local	" __STRING(func) "\n"					\
     "jal	" __STRING(func)
 #else
 #define	INIT_CALL_SEQ(func)						\
@@ -45,6 +46,7 @@
     "1:				\n"					\
     ".set reorder		\n"					\
     ".cpsetup $ra, $v0, 1b	\n"					\
+    ".local	" __STRING(func) "\n"					\
     "jal	" __STRING(func)
 #endif