felwinter : Correct battery disconnect_val.
felwinter : Correct battery disconnect_val.

This patch correct battery disconnect_val value.
The address 0 16 bit is contain XCHG/XDSG, .mfgacc_support is not
required, so remove it.
Typically, we have used XDSG(bit 13) with a disconnect val of 0x2000.

BUG=b:197593415
BRANCH=none
TEST=It doesn't show battery disconnect in EC log.
Ectool batterycutoff success.

Change-Id: I93f04ba28c5fe913d068f8b8449299567c460982
Signed-off-by: Logan_Liao <38e5e1ec23749ef11e154723cfdd2acf0fcc9df3@compal.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3268027
Reviewed-by: Logan Liao <3e686fbe841e7f552391c104b5d07238268768cb@compal.corp-partner.google.com>
Reviewed-by: Ko Ko <0cc082a0cd445f866e8a9ee2cb15f4d5dfc36bed@compal.corp-partner.google.com>
Reviewed-by: caveh jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Tested-by: Logan Liao <3e686fbe841e7f552391c104b5d07238268768cb@compal.corp-partner.google.com>
Commit-Queue: caveh jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec