elan_sensor_pal: Type definition fp_sensor_info_t
elan_sensor_pal: Type definition fp_sensor_info_t

"2002994" was built error in latest version.
This patch typedef on struct declaration its "fp_sensor_info_t" for
fixed error of "unknown type name".

BRANCH=None
BUG=None
TEST=We build on nami_fp, and testing Elan sensor with libelan_515.a
and libelan_80.a successfully.

Signed-off-by: herman lin <8f92b95854b248ca69c6cb521ef846f20bb19126@emc.com.tw>
Change-Id: I87884c9d69291839e7632379cd6700d2d77a8d05
Signed-off-by: herman lin <8f92b95854b248ca69c6cb521ef846f20bb19126@emc.com.tw>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2632113
Reviewed-by: Yicheng Li <77a205905d8955597c069555e9569c30512f6bd8@chromium.org>
Commit-Queue: Yicheng Li <77a205905d8955597c069555e9569c30512f6bd8@chromium.org>
Tested-by: Yicheng Li <77a205905d8955597c069555e9569c30512f6bd8@chromium.org>

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