kbuild: clean up *-asn1.[ch] patterns from top-level Makefile

Clean up these patterns from the top Makefile to omit 'clean-files'
in each Makefile.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Makefile

@@ -1616,6 +1616,7 @@ clean: $(clean-dirs)
 		-o -name '*.su'  \
 		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
 		-o -name '*.lex.c' -o -name '*.tab.[ch]' \
+		-o -name '*-asn1.[ch]' \
 		-o -name '*.symtypes' -o -name 'modules.order' \
 		-o -name modules.builtin -o -name '.tmp_*.o.*' \
 		-o -name .cache.mk \

crypto/Makefile

@@ -38,8 +38,6 @@ obj-$(CONFIG_CRYPTO_DH) += dh_generic.o
 $(obj)/rsapubkey-asn1.o: $(obj)/rsapubkey-asn1.c $(obj)/rsapubkey-asn1.h
 $(obj)/rsaprivkey-asn1.o: $(obj)/rsaprivkey-asn1.c $(obj)/rsaprivkey-asn1.h
 $(obj)/rsa_helper.o: $(obj)/rsapubkey-asn1.h $(obj)/rsaprivkey-asn1.h
-clean-files += rsapubkey-asn1.c rsapubkey-asn1.h
-clean-files += rsaprivkey-asn1.c rsaprivkey-asn1.h
 
 rsa_generic-y := rsapubkey-asn1.o
 rsa_generic-y += rsaprivkey-asn1.o

crypto/asymmetric_keys/Makefile

@@ -29,9 +29,6 @@ $(obj)/x509_cert_parser.o: \
 $(obj)/x509-asn1.o: $(obj)/x509-asn1.c $(obj)/x509-asn1.h
 $(obj)/x509_akid-asn1.o: $(obj)/x509_akid-asn1.c $(obj)/x509_akid-asn1.h
 
-clean-files	+= x509-asn1.c x509-asn1.h
-clean-files	+= x509_akid-asn1.c x509_akid-asn1.h
-
 #
 # PKCS#7 message handling
 #
@@ -45,8 +42,6 @@ pkcs7_message-y := \
 $(obj)/pkcs7_parser.o: $(obj)/pkcs7-asn1.h
 $(obj)/pkcs7-asn1.o: $(obj)/pkcs7-asn1.c $(obj)/pkcs7-asn1.h
 
-clean-files	+= pkcs7-asn1.c pkcs7-asn1.h
-
 #
 # PKCS#7 parser testing key
 #
@@ -66,5 +61,3 @@ verify_signed_pefile-y := \
 
 $(obj)/mscode_parser.o: $(obj)/mscode-asn1.h $(obj)/mscode-asn1.h
 $(obj)/mscode-asn1.o: $(obj)/mscode-asn1.c $(obj)/mscode-asn1.h
-
-clean-files	+= mscode-asn1.c mscode-asn1.h

net/ipv4/netfilter/Makefile

@@ -31,7 +31,6 @@ obj-$(CONFIG_NF_NAT_PPTP) += nf_nat_pptp.o
 nf_nat_snmp_basic-y := nf_nat_snmp_basic-asn1.o nf_nat_snmp_basic_main.o
 $(obj)/nf_nat_snmp_basic_main.o: $(obj)/nf_nat_snmp_basic-asn1.h
 obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
-clean-files := nf_nat_snmp_basic-asn1.c nf_nat_snmp_basic-asn1.h
 
 obj-$(CONFIG_NF_NAT_MASQUERADE_IPV4) += nf_nat_masquerade_ipv4.o