[bios] Use size_t when casting _text16_memsz and _data16_memsz

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

src/arch/i386/firmware/pcbios/hidemem.c

 extern char _textdata[];
 extern char _etextdata[];
 extern char _text16_memsz[];
-#define _text16_memsz ( ( unsigned int ) _text16_memsz )
+#define _text16_memsz ( ( size_t ) _text16_memsz )
 extern char _data16_memsz[];
-#define _data16_memsz ( ( unsigned int ) _data16_memsz )
+#define _data16_memsz ( ( size_t ) _data16_memsz )
 
 /**
  * Hide region of memory from system memory map

src/arch/i386/interface/pxe/pxe_call.c

 
 /** Real-mode code segment size */
 extern char _text16_memsz[];
+#define _text16_memsz ( ( size_t ) _text16_memsz )
 
 /** Real-mode data segment size */
 extern char _data16_memsz[];
+#define _data16_memsz ( ( size_t ) _data16_memsz )
 
 /** PXENV_UNDI_TRANSMIT API call profiler */
 static struct profiler pxe_api_tx_profiler __profiler =
 	int discard_b, discard_c, discard_d, discard_D;
 	uint16_t status;
 
-	DBGC ( &pxe_netdev, "PXE NBP starting with netdev %s, code %04x:%04x, "
-	       "data %04x:%04x\n", ( pxe_netdev ? pxe_netdev->name : "<none>" ),
-	       rm_cs, ( ( unsigned int ) _text16_memsz ),
-	       rm_ds, ( ( unsigned int ) _data16_memsz ) );
+	DBGC ( &pxe_netdev, "PXE NBP starting with netdev %s, code %04x:%04zx, "
+	       "data %04x:%04zx\n", ( pxe_netdev ? pxe_netdev->name : "<none>"),
+	       rm_cs, _text16_memsz, rm_ds, _data16_memsz );
 
 	/* Allow restarting NBP via PXENV_RESTART_TFTP */
 	jmp = rmsetjmp ( pxe_restart_nbp );