hw/tpm: 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>
Reviewed-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180625124238.25339-13-f4bug@amsat.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

include/hw/acpi/tpm.h

@@ -16,6 +16,7 @@
 #ifndef HW_ACPI_TPM_H
 #define HW_ACPI_TPM_H
 
+#include "qemu/units.h"
 #include "hw/registerfields.h"
 
 #define TPM_TIS_ADDR_BASE           0xFED40000
@@ -176,7 +177,7 @@ REG32(CRB_DATA_BUFFER, 0x80)
 #define TPM_CRB_ADDR_CTRL           (TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ)
 #define TPM_CRB_R_MAX               R_CRB_DATA_BUFFER
 
-#define TPM_LOG_AREA_MINIMUM_SIZE   (64 * 1024)
+#define TPM_LOG_AREA_MINIMUM_SIZE   (64 * KiB)
 
 #define TPM_TCPA_ACPI_CLASS_CLIENT  0
 #define TPM_TCPA_ACPI_CLASS_SERVER  1