[POWERPC] Support feature fixups in modules

This patch adds support for feature fixups in modules. This involves
adding support for R_PPC64_REL64 relocs to the 64 bits module loader.
It also modifies modpost.c to ignore the powerpc fixup sections (or it
would warn when used in .init.text).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 4127796..2e11416 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -921,6 +921,8 @@
 		".fixup",
 		".smp_locks",
 		".plt",  /* seen on ARCH=um build on x86_64. Harmless */
+		"__ftr_fixup",		/* powerpc cpu feature fixup */
+		"__fw_ftr_fixup",	/* powerpc firmware feature fixup */
 		NULL
 	};
 	/* Start of section names */