soc: cpu_pwr_ctl: Change the CPU power up sequence for 8994

MSM8994 observed some droops with the bypass LDO setup.
Remove this from the sequence and change the delay between the
writes to be 1 micro-second.

Change-Id: Ied4199ecdbbd84a33d227f5678a88af8c2c6fca7
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>