crypto: arm64 - generate *.S by Perl at build time instead of shipping them

Generate *.S by Perl like arch/{mips,x86}/crypto/Makefile.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

arch/arm64/crypto/Makefile

@@ -68,19 +68,16 @@ CFLAGS_aes-glue-ce.o	:= -DUSE_V8_CRYPTO_EXTENSIONS
 $(obj)/aes-glue-%.o: $(src)/aes-glue.c FORCE
 	$(call if_changed_rule,cc_o_c)
 
-ifdef REGENERATE_ARM64_CRYPTO
 quiet_cmd_perlasm = PERLASM $@
       cmd_perlasm = $(PERL) $(<) void $(@)
 
-$(src)/poly1305-core.S_shipped: $(src)/poly1305-armv8.pl
+$(obj)/poly1305-core.S: $(src)/poly1305-armv8.pl
 	$(call cmd,perlasm)
 
-$(src)/sha256-core.S_shipped: $(src)/sha512-armv8.pl
+$(obj)/sha256-core.S: $(src)/sha512-armv8.pl
 	$(call cmd,perlasm)
 
-$(src)/sha512-core.S_shipped: $(src)/sha512-armv8.pl
+$(obj)/sha512-core.S: $(src)/sha512-armv8.pl
 	$(call cmd,perlasm)
 
-endif
-
 clean-files += poly1305-core.S sha256-core.S sha512-core.S