ASoC: msm: Fix the last param 'for_each_set_bit'

The adm command does not get executed for last session in
'for_each_set_bit' loop. This results in failiure of Multimedia4
session.

The last parameter for 'for_each_set_bit' is size rather than
id bit. The current usage of bit id results in no adm command
for the last session.

Replace the last parameter to appropriate size macro.

Signed-off-by: Asish Bhattacharya <asishb@codeaurora.org>
Change-Id: I309fb9b1c1cf5d49b6d13acedbfb5f1e20540771