hw/block/pflash_cfi02: Fix debug format string

Always compile the debug code to prevent format string to bitrot.
Delete dead code.

Signed-off-by: Stephen Checkoway <stephen.checkoway@oberlin.edu>
Message-Id: <20190426162624.55977-3-stephen.checkoway@oberlin.edu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[PMD: Extracted from bigger patch, use PRIx32]
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>

hw/block/pflash_cfi02.c

@@ -47,15 +47,13 @@
 #include "hw/sysbus.h"
 #include "trace.h"
 
-//#define PFLASH_DEBUG
-#ifdef PFLASH_DEBUG
+#define PFLASH_DEBUG false
 #define DPRINTF(fmt, ...)                                  \
 do {                                                       \
-    fprintf(stderr, "PFLASH: " fmt , ## __VA_ARGS__);       \
+    if (PFLASH_DEBUG) {                                    \
+        fprintf(stderr, "PFLASH: " fmt, ## __VA_ARGS__);   \
+    }                                                      \
 } while (0)
-#else
-#define DPRINTF(fmt, ...) do { } while (0)
-#endif
 
 #define PFLASH_LAZY_ROMD_THRESHOLD 42
 
@@ -218,14 +216,14 @@ static uint32_t pflash_read(PFlashCFI02 *pfl, hwaddr offset,
         default:
             goto flash_read;
         }
-        DPRINTF("%s: ID " TARGET_FMT_plx " %x\n", __func__, boff, ret);
+        DPRINTF("%s: ID " TARGET_FMT_plx " %" PRIx32 "\n", __func__, boff, ret);
         break;
     case 0xA0:
     case 0x10:
     case 0x30:
         /* Status register read */
         ret = pfl->status;
-        DPRINTF("%s: status %x\n", __func__, ret);
+        DPRINTF("%s: status %" PRIx32 "\n", __func__, ret);
         /* Toggle bit 6 */
         pfl->status ^= 0x40;
         break;
@@ -268,10 +266,6 @@ static void pflash_write(PFlashCFI02 *pfl, hwaddr offset,
     trace_pflash_io_write(offset, width, width << 1, value, pfl->wcycle);
     cmd = value;
     if (pfl->cmd != 0xA0 && cmd == 0xF0) {
-#if 0
-        DPRINTF("%s: flash reset asked (%02x %02x)\n",
-                __func__, pfl->cmd, cmd);
-#endif
         goto reset_flash;
     }
     offset &= pfl->chip_len - 1;