drivers: mfd: Increase the SIDO buck inductor current

Increase the SIDO (single input dual output) buck inductor
current to avoid the output voltage drop to zero during
audio use-cases in which case codec communication over
slimbus will fail.

Change-Id: I0189bd8fd4952b3d7df411e64fd50e59645290b1
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>