It eases code review, unit is explicit.

Patch generated using:

  $ git grep -E '(1024|2048|4096|8192|(<<|>>).?(10|20|30))' hw/ include/hw/

and modified manually.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
---
 hw/xtensa/xtfpga.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/hw/xtensa/xtfpga.c b/hw/xtensa/xtfpga.c
index 5dc13034f9..918cdadbb4 100644
--- a/hw/xtensa/xtfpga.c
+++ b/hw/xtensa/xtfpga.c
@@ -26,6 +26,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/units.h"
 #include "qapi/error.h"
 #include "cpu.h"
 #include "sysemu/sysemu.h"
@@ -152,7 +153,7 @@ static void xtfpga_net_init(MemoryRegion *address_space,
             sysbus_mmio_get_region(s, 1));
 
     ram = g_malloc(sizeof(*ram));
-    memory_region_init_ram_nomigrate(ram, OBJECT(s), "open_eth.ram", 16384,
+    memory_region_init_ram_nomigrate(ram, OBJECT(s), "open_eth.ram", 16 * KiB,
                            &error_fatal);
     vmstate_register_ram_global(ram);
     memory_region_add_subregion(address_space, buffers, ram);
@@ -229,7 +230,7 @@ static void xtfpga_init(const XtfpgaBoardDesc *board, MachineState *machine)
     const char *kernel_cmdline = qemu_opt_get(machine_opts, "append");
     const char *dtb_filename = qemu_opt_get(machine_opts, "dtb");
     const char *initrd_filename = qemu_opt_get(machine_opts, "initrd");
-    const unsigned system_io_size = 224 * 1024 * 1024;
+    const unsigned system_io_size = 224 * MiB;
     int n;
 
     for (n = 0; n < smp_cpus; n++) {
-- 
2.17.1