qpnp-fg-gen3: change the encoding for delta soc threshold

Currently, delta SOC threshold is written as a 8 bit value but
the encoding is in 11 bits. This will cause the delta SOC
threshold programmed to a lower value causing interrupts to fire
quickly. Change the numerator of delta SOC SRAM parameter so that
the delta SOC threshold will be set correctly. Maximum possible
threshold will be 12.45% (1/2048 * 255).

Change-Id: Ia908c917d71939b9d72b16ddca3400a692540bf3
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>