crypto: atmel - Fix sparse endianness warnings

The param2 member in atmel_i2c_cmd is supposed to be little-endian
but was marked as u16.  This patch changes it to a __le16 which
reveals a missing endian swap in atmel_i2c_init_read_cmd.

Another missing little-endian marking is also added in
atmel_i2c_checksum.

Fixes: 11105693fa ("crypto: atmel-ecc - introduce Microchip...")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/atmel-i2c.h

@@ -8,6 +8,7 @@
 #define __ATMEL_I2C_H__
 
 #include <linux/hw_random.h>
+#include <linux/types.h>
 
 #define ATMEL_ECC_PRIORITY		300
 
@@ -50,7 +51,7 @@ struct atmel_i2c_cmd {
 	u8 count;
 	u8 opcode;
 	u8 param1;
-	u16 param2;
+	__le16 param2;
 	u8 data[MAX_RSP_SIZE];
 	u8 msecs;
 	u16 rxsize;