w1: fix omap 1-wire driver compilation

Fixes the following error:

  drivers/w1/masters/omap_hdq.c: In function 'hdq_wait_for_flag':
  drivers/w1/masters/omap_hdq.c:137: error: implicit declaration of function 'schedule_timeout_uninterruptible'
  drivers/w1/masters/omap_hdq.c: In function 'hdq_write_byte':
  drivers/w1/masters/omap_hdq.c:177: error: 'TASK_UNINTERRUPTIBLE' undeclared (first use in this function)
  drivers/w1/masters/omap_hdq.c:177: error: (Each undeclared identifier is reported only once
  drivers/w1/masters/omap_hdq.c:177: error: for each function it appears in.)
  drivers/w1/masters/omap_hdq.c:177: error: implicit declaration of function 'schedule_timeout'
  drivers/w1/masters/omap_hdq.c: In function 'hdq_isr':
  drivers/w1/masters/omap_hdq.c:221: error: 'TASK_NORMAL' undeclared (first use in this function)
  drivers/w1/masters/omap_hdq.c: In function 'omap_hdq_break':
  drivers/w1/masters/omap_hdq.c:316: error: 'TASK_UNINTERRUPTIBLE' undeclared (first use in this function)

Signed-off-b...