google_battery: bhi weight adjustable

add debug nodes under debugfs /d/google_battery for testing:
bhi_debug_cap_idx, bhi_debug_imp_idx, bhi_debug_sd_idx
bhi_debug_health_idx, bhi_debug_status

Bug: 244112029
Signed-off-by: Jenny Ho <[email protected]>
Change-Id: I7afbeb5c05a188f56e6f347590f21d7ed6d7263d
2 files changed