Changes

power_control: lchan_ms_pwr_ctrl(): always log input values

Depending on the power control interval (P_Con_INTERVAL), the MS power
loop may delay the power control decision for a certain amount of SACCH
block periods.  In this case lchan_ms_pwr_ctrl() returns early and no
logging is printed at all.

Let's always log the input values (reported level, UL measurements)
early in lchan_ms_pwr_ctrl().  This is useful for debugging, and
this is exactly what lchan_bs_pwr_ctrl() does.

Change-Id: I3b8466f062624fc8a2ea6f8220c057d3812f2c35