MIPS: txx9 7segled fix struct device has no member

arch/mips/txx9/generic/7segled.c: In function 'tx_7segled_init_sysfs':
arch/mips/txx9/generic/7segled.c:105:6: error: 'struct device' has no member named 'dev'
make[3]: *** [arch/mips/txx9/generic/7segled.o] Error 1

Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/3250/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>