digest: move digest.c to crypto

with not the rest of the implementation

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common/Makefile

@@ -20,7 +20,6 @@ obj-$(CONFIG_CMD_MEMTEST)	+= memtest.o
 obj-$(CONFIG_COMMAND_SUPPORT)	+= command.o
 obj-$(CONFIG_CONSOLE_FULL)	+= console.o
 obj-$(CONFIG_CONSOLE_SIMPLE)	+= console_simple.o
-obj-$(CONFIG_DIGEST)		+= digest.o
 obj-$(CONFIG_DDR_SPD)		+= ddr_spd.o
 obj-$(CONFIG_ENV_HANDLING)	+= environment.o
 obj-$(CONFIG_ENVIRONMENT_VARIABLES) += env.o

crypto/Makefile

@@ -1,6 +1,7 @@
 obj-$(CONFIG_CRC32)	+= crc32.o
 obj-$(CONFIG_CRC16)	+= crc16.o
 obj-$(CONFIG_CRC7)	+= crc7.o
+obj-$(CONFIG_DIGEST)	+= digest.o
 obj-$(CONFIG_MD5)	+= md5.o
 obj-$(CONFIG_SHA1)	+= sha1.o
 obj-$(CONFIG_SHA224)	+= sha2.o