[uaccess] Remove redundant copy_from_user() and copy_to_user()

Remove the now-redundant copy_from_user() and copy_to_user() wrapper
functions.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/infiniband/flexboot_nodnic.c

@@ -20,6 +20,7 @@
 FILE_LICENCE ( GPL2_OR_LATER );
 
 #include <stdio.h>
+#include <string.h>
 #include <unistd.h>
 #include <errno.h>
 #include <ipxe/pci.h>

src/drivers/infiniband/linda.c

@@ -25,6 +25,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 
 #include <stdint.h>
 #include <stdlib.h>
+#include <string.h>
 #include <errno.h>
 #include <unistd.h>
 #include <assert.h>

src/drivers/infiniband/mlx_utils_flexboot/src/mlx_memory_priv.c

@@ -7,6 +7,7 @@
 
 #include <ipxe/malloc.h>
 #include <stddef.h>
+#include <string.h>
 #include <byteswap.h>
 #include <ipxe/io.h>
 #include "../../mlx_utils/include/private/mlx_memory_priv.h"

src/drivers/infiniband/qib7322.c

@@ -25,6 +25,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 
 #include <stdint.h>
 #include <stdlib.h>
+#include <string.h>
 #include <errno.h>
 #include <unistd.h>
 #include <assert.h>