hw/nios2: Use the IEC binary prefix definitions

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: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180625124238.25339-26-f4bug@amsat.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/nios2/boot.c

@@ -29,6 +29,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/units.h"
 #include "qemu-common.h"
 #include "cpu.h"
 #include "qemu/option.h"
@@ -38,7 +39,6 @@
 #include "sysemu/sysemu.h"
 #include "hw/loader.h"
 #include "elf.h"
-#include "qemu/cutils.h"
 
 #include "boot.h"
 
@@ -177,7 +177,7 @@ void nios2_load_kernel(Nios2CPU *cpu, hwaddr ddr_base,
             high = ddr_base + kernel_size;
         }
 
-        high = ROUND_UP(high, 1024 * 1024);
+        high = ROUND_UP(high, 1 * MiB);
 
         /* If initrd is available, it goes after the kernel, aligned to 1M. */
         if (initrd_filename) {
@@ -213,7 +213,7 @@ void nios2_load_kernel(Nios2CPU *cpu, hwaddr ddr_base,
         high += fdt_size;
 
         /* Kernel command is at the end, 4k aligned. */
-        boot_info.cmdline = ROUND_UP(high, 4096);
+        boot_info.cmdline = ROUND_UP(high, 4 * KiB);
         if (kernel_cmdline && strlen(kernel_cmdline)) {
             pstrcpy_targphys("cmdline", boot_info.cmdline, 256, kernel_cmdline);
         }