config: rename parse_logsize to be more generic

Rename config_parse_logsize to config_parse_bytesize.
A more generic name allows this function to be reused in other
config parsing purposes.

Change-

config: rename parse_logsize to be more generic

Rename config_parse_logsize to config_parse_bytesize.
A more generic name allows this function to be reused in other
config parsing purposes.

Change-Id: I3036c184669be17ddc0d194f275ea05d871341d1
Signed-off-by: Medicine Yeh <medicinehy@gmail.com>

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