power: qpnp-fg: Use default DELTA_SOC without rounding the value

 * Using soc_to_setpoint function to determine DELTA_SOC value is
   resulting into a value of 3, which sometimes causes the battery
   percentage to instantly drop 2% instead of 1%

Change-Id: I56156a51dbd8c67e362fce28e408234bbf6211cb
Signed-off-by: Davide Garberi <dade.garberi@gmail.com>

Revert "qpnp-fg: [kitakami] 2% drop fix"
 This reverts commit 374482a756e393a1dbb8a4fa2bd8389cc424d9d5.

Signed-off-by: Andrey Cherepkov <andreiskull@gmail.com>
(cherry picked from commit 3e0d7d35c6fda5c46a3b069452b3bcc756889b7e)