hpet: Silence warning on write to running main counter

Setting the main counter while the HPET is enabled may not be a good
idea of the guest, but it is supported and should, thus, not spam the
host console with warnings.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

hw/hpet.c

@@ -520,7 +520,7 @@ static void hpet_ram_writel(void *opaque, target_phys_addr_t addr,
             break;
         case HPET_COUNTER:
             if (hpet_enabled()) {
-                printf("qemu: Writing counter while HPET enabled!\n");
+                DPRINTF("qemu: Writing counter while HPET enabled!\n");
             }
             s->hpet_counter =
                 (s->hpet_counter & 0xffffffff00000000ULL) | value;
@@ -529,7 +529,7 @@ static void hpet_ram_writel(void *opaque, target_phys_addr_t addr,
             break;
         case HPET_COUNTER + 4:
             if (hpet_enabled()) {
-                printf("qemu: Writing counter while HPET enabled!\n");
+                DPRINTF("qemu: Writing counter while HPET enabled!\n");
             }
             s->hpet_counter =
                 (s->hpet_counter & 0xffffffffULL) | (((uint64_t)value) << 32);