mfd: ab3100-core: Correct code sytle problems

Corrects the following checkpatch gripes:

    WARNING: quoted string split across lines
    #95: FILE: drivers/mfd/ab3100-core.c:95:
    +			"write error (write register) "
    +			"%d bytes transferred (expected 2)\n",

    WARNING: quoted string split across lines
    #139: FILE: drivers/mfd/ab3100-core.c:139:
    +			"write error (write test register) "
    +			"%d bytes transferred (expected 2)\n",

    WARNING: quoted string split across lines
    #175: FILE: drivers/mfd/ab3100-core.c:175:
    +			"write error (send register address) "
    +			"%d bytes transferred (expected 1)\n",

    WARNING: quoted string split across lines
    #193: FILE: drivers/mfd/ab3100-core.c:193:
    +			"write error (read register) "
    +			"%d bytes transferred (expected 1)\n",

    WARNING: quoted string split across lines
    #241: FILE: drivers/mfd/ab3100-core.c:241:
    +			"write error (send first register address) "
    +			"%d bytes transferred (expected 1)\n",

    WARNING: quoted string split across lines
    #256: FILE: drivers/mfd/ab3100-core.c:256:
    +			"write error (read register page) "
    +			"%d bytes transferred (expected %d)\n",

    WARNING: quoted string split across lines
    #299: FILE: drivers/mfd/ab3100-core.c:299:
    +			"write error (maskset send address) "
    +			"%d bytes transferred (expected 1)\n",

    WARNING: quoted string split across lines
    #314: FILE: drivers/mfd/ab3100-core.c:314:
    +			"write error (maskset read register) "
    +			"%d bytes transferred (expected 1)\n",

    WARNING: quoted string split across lines
    #334: FILE: drivers/mfd/ab3100-core.c:334:
    +			"write error (write register) "
    +			"%d bytes transferred (expected 2)\n",

    WARNING: please, no spaces at the start of a line
    #374: FILE: drivers/mfd/ab3100-core.c:374:
    +  return blocking_notifier_chain_unregister(&ab3100->event_subscribers,$

    WARNING: Prefer seq_puts to seq_printf
    #458: FILE: drivers/mfd/ab3100-core.c:458:
    +	seq_printf(s, "AB3100 registers:\n");

    WARNING: quoted string split across lines
    #564: FILE: drivers/mfd/ab3100-core.c:564:
    +			 "debug write reg[0x%02x] with 0x%02x, "
    +			 "after readback: 0x%02x\n",

    WARNING: quoted string split across lines
    #723: FILE: drivers/mfd/ab3100-core.c:723:
    +			 "AB3100 P1E variant detected, "
    +			 "forcing chip to 32KHz\n");

    WARNING: quoted string split across lines
    #882: FILE: drivers/mfd/ab3100-core.c:882:
    +			"could not communicate with the AB3100 analog "
    +			"baseband chip\n");

    WARNING: quoted string split across lines
    #906: FILE: drivers/mfd/ab3100-core.c:906:
    +		dev_err(&client->dev, "accepting it anyway. Please update "
    +			"the driver.\n");

    total: 0 errors, 15 warnings, 999 lines checked

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>