ARC: module: elide loop to save reference to .eh_frame

The loop was really needed in .debug_frame regime where wanted make it
as SH_ALLOC so that apply_relocate_add() would process it. That's not
needed for .eh_frame, so we check this in apply_relocate_add() which
gets called for each section.

Note that we need to save reference to "section name strings" section in
module_frob_arch_sections() since apply_relocate_add() doesn't get that

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/include/asm/module.h

@@ -18,6 +18,7 @@
 struct mod_arch_specific {
 	void *unw_info;
 	int unw_sec_idx;
+	const char *secstr;
 };
 #endif