x86_64: patch: Add -fpic -fno-PIE hint

Link: #5
Signed-off-by: Rong Tao <[email protected]>

src/arch/x86_64/patch.c

@@ -201,7 +201,7 @@ int apply_relocate_add(const struct load_info *info, GElf_Shdr *sechdrs,
 overflow:
 	lerror("overflow in relocation type %s(%d) val %lx\n",
 		rela_type_string(r_type), r_type, val);
-	lerror("likely not compiled with -mcmodel=kernel.\n");
+	lerror("likely not compiled with -fpic and -fno-PIE.\n");
 	return -ENOEXEC;
 }