dev_warn() will print device name with associated driver,
no need to keep this open coded.

While here, adjust indentation in the rest of dev_dbg() calls.
Tested-by: NNikola Ciprich <nikola.ciprich@linuxbox.cz>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NSudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>