raw-posix: DPRINTF instead of DEBUG_BLOCK_PRINT

raw-posix: DPRINTF instead of DEBUG_BLOCK_PRINT

Building the QEMU tools fails if we #define DEBUG_BLOCK inside
block/raw-posix.c. Here instead of adding qemu-log.o in block-obj-y
so that DEBUG_BLOCK_PRINT can be used, we substitute the latter with
a simple DPRINTF() (that does not cause bit-rot).

Signed-off-by: Dimitris Aragiorgis <[email protected]>
Reviewed-by: Eric Blake <[email protected]>
Reviewed-by: Stefan Hajnoczi <[email protected]>
Message-id: 1435056300[email protected]
Signed-off-by: Stefan Hajnoczi <[email protected]>