hw/omap.h: Use TARGET_PRIxPHYS to define OMAP_FMT_plx

Use the new TARGET_PRIxPHYS macro to avoid the need to define an
OMAP_FMT_plx macro whose expansion depends directly on
TARGET_PHYS_ADDR_BITS.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

hw/omap.h

@@ -942,13 +942,7 @@ struct omap_mpu_state_s *omap2420_mpu_init(MemoryRegion *sysmem,
                 unsigned long sdram_size,
                 const char *core);
 
-# if TARGET_PHYS_ADDR_BITS == 32
-#  define OMAP_FMT_plx "%#08x"
-# elif TARGET_PHYS_ADDR_BITS == 64
-#  define OMAP_FMT_plx "%#08" PRIx64
-# else
-#  error TARGET_PHYS_ADDR_BITS undefined
-# endif
+#define OMAP_FMT_plx "%#08" TARGET_PRIxPHYS
 
 uint32_t omap_badwidth_read8(void *opaque, target_phys_addr_t addr);
 void omap_badwidth_write8(void *opaque, target_phys_addr_t addr,