drivers/fbd/action.c: removed some 64-bit functions

Change-Id: I6a041f7dabad3e849d868c94c4fbd0edb7fc88b7
Replace 64bit funcions with operators in at_wini.c

Change-Id: I5d4f85a55f9f9d4c2a26daca6957be8f57ba9164
Revert "drivers/fbd/action.c: removed some 64-bit functions"

This reverts commit 85e7d849c804ae9df50e29dc9c81057a83e16726.

This introduce a bug in position computing for disk bigger than 4GB.

Change-Id: I281e60e9644d995cc4643006b50c05693f939b44