power: qpnp-fg-gen3: fg-util: Update dump_sram to support GEN4 FG

Currently, dump_sram is printing the addresses incrementing by 1.
This is fine for GEN3 FG SRAM. However, this helper function will
be shared with GEN4 FG for which SRAM address will be incremented
by 2 as the print format to dump SRAM remains same i.e. 4 bytes
per line. Add support for it.

Change-Id: Id20c4338c4d9d14d36624b04da76bda8f24e9692
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>