lib/crypto: Adapt public_key header with MbedTLS

Previous patch has introduced MbedTLS porting layer for public key,
here to adjust the header and makefiles accordingly.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/lib/crypto/Makefile b/lib/crypto/Makefile
index 1605908..7e87721 100644
--- a/lib/crypto/Makefile
+++ b/lib/crypto/Makefile
@@ -7,9 +7,8 @@
 
 asymmetric_keys-y := asymmetric_type.o
 
-obj-$(CONFIG_$(SPL_)ASYMMETRIC_PUBLIC_KEY_SUBTYPE) += \
-	public_key_helper.o \
-	public_key.o
+obj-$(CONFIG_$(SPL_)ASYMMETRIC_PUBLIC_KEY_SUBTYPE) += public_key_helper.o
+obj-$(CONFIG_$(SPL_)ASYMMETRIC_PUBLIC_KEY_LEGACY) += public_key.o
 
 #
 # RSA public key parser
diff --git a/lib/crypto/asymmetric_type.c b/lib/crypto/asymmetric_type.c
index 24c2d15..95b82cd 100644
--- a/lib/crypto/asymmetric_type.c
+++ b/lib/crypto/asymmetric_type.c
@@ -12,7 +12,6 @@
 #include <keys/asymmetric-subtype.h>
 #include <keys/asymmetric-parser.h>
 #endif
-#include <crypto/public_key.h>
 #ifdef __UBOOT__
 #include <linux/bug.h>
 #include <linux/compat.h>
@@ -26,6 +25,7 @@
 #include <linux/slab.h>
 #include <linux/ctype.h>
 #endif
+#include <crypto/public_key.h>
 #ifdef __UBOOT__
 #include <keys/asymmetric-type.h>
 #else