charger/mt6370: Fix wrong init IRQ mask.
charger/mt6370: Fix wrong init IRQ mask.

DPDM_IRQ_MASK register address should be at 0xE6, rather than 0xE5.
Shift the mask init value to the right address.

TEST=make BOARD=kukui flash_ec; Attach DCP. Check chgsup type=3.
BUG=b:80160408
BRANCH=None

Change-Id: I44eac570bf2d8fe11a3f460ed97f024f4be3813a
Signed-off-by: Yilun Lin <2f2733c7206ea2b76bd2db1905cc5e8a75841c48@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1192862
Commit-Ready: Yilun Lin <2f2733c7206ea2b76bd2db1905cc5e8a75841c48@chromium.org>
Tested-by: Yilun Lin <2f2733c7206ea2b76bd2db1905cc5e8a75841c48@chromium.org>
Reviewed-by: Nicolas Boichat <f3daba1cdc403799935674d3cd4b0e5bd1804232@chromium.org>

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