lib/crypto: remove dependence on ASN1 decoder

When building with MbedTLS,  we are using MbedTLS to decode ASN1 data
for x509, pkcs7 and mscode. So we can remove the dependence on ASN1
decoder when MBEDTLS_LIB_X509 is enabled.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>

lib/crypto/Makefile

@@ -31,6 +31,11 @@ endif
 # X.509 Certificate handling
 #
 obj-$(CONFIG_$(SPL_)X509_CERTIFICATE_PARSER) += x509_key_parser.o
+ifdef CONFIG_MBEDTLS_LIB_X509
+x509_key_parser-y := \
+	x509_cert_parser.o \
+	x509_public_key.o
+else
 x509_key_parser-y := \
 	x509.asn1.o \
 	x509_akid.asn1.o \
@@ -43,27 +48,37 @@ $(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
+endif
 
 #
 # PKCS#7 message handling
 #
 obj-$(CONFIG_$(SPL_)PKCS7_MESSAGE_PARSER) += pkcs7_message.o
+ifdef CONFIG_MBEDTLS_LIB_X509
+pkcs7_message-y := \
+	pkcs7_parser.o
+else
 pkcs7_message-y := \
 	pkcs7.asn1.o \
 	pkcs7_parser.o
-obj-$(CONFIG_$(SPL_)PKCS7_VERIFY) += pkcs7_verify.o
 
 $(obj)/pkcs7_parser.o: $(obj)/pkcs7.asn1.h
 $(obj)/pkcs7.asn1.o: $(obj)/pkcs7.asn1.c $(obj)/pkcs7.asn1.h
+endif
+obj-$(CONFIG_$(SPL_)PKCS7_VERIFY) += pkcs7_verify.o
 
 #
 # Signed PE binary-wrapped key handling
 #
 obj-$(CONFIG_$(SPL_)MSCODE_PARSER) += mscode.o
-
+ifdef CONFIG_MBEDTLS_LIB_X509
+mscode-y := \
+	mscode_parser.o
+else
 mscode-y := \
 	mscode_parser.o \
 	mscode.asn1.o
 
 $(obj)/mscode_parser.o: $(obj)/mscode.asn1.h $(obj)/mscode.asn1.h
 $(obj)/mscode.asn1.o: $(obj)/mscode.asn1.c $(obj)/mscode.asn1.h
+endif