crypto: arm - 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/arm/crypto/Makefile

@@ -45,19 +45,17 @@ poly1305-arm-y := poly1305-core.o poly1305-glue.o
 nhpoly1305-neon-y := nh-neon-core.o nhpoly1305-neon-glue.o
 curve25519-neon-y := curve25519-core.o curve25519-glue.o
 
-ifdef REGENERATE_ARM_CRYPTO
 quiet_cmd_perl = PERL    $@
       cmd_perl = $(PERL) $(<) > $(@)
 
-$(src)/poly1305-core.S_shipped: $(src)/poly1305-armv4.pl
+$(obj)/poly1305-core.S: $(src)/poly1305-armv4.pl
 	$(call cmd,perl)
 
-$(src)/sha256-core.S_shipped: $(src)/sha256-armv4.pl
+$(obj)/sha256-core.S: $(src)/sha256-armv4.pl
 	$(call cmd,perl)
 
-$(src)/sha512-core.S_shipped: $(src)/sha512-armv4.pl
+$(obj)/sha512-core.S: $(src)/sha512-armv4.pl
 	$(call cmd,perl)
-endif
 
 clean-files += poly1305-core.S sha256-core.S sha512-core.S