leds-pm8xxx: Pass LED flags from board file

Instead of hard coding the flag into led driver, pass it
from board file.
While at it, re-factor the code to separate led upstream
core data with board specific data.

Signed-off-by: Jay Chokshi <jchokshi@codeaurora.org>

Conflicts:

	drivers/mfd/pm8921-core.c
5 files changed