qseecom: Added boundary checks between two subsequent fields

BugLink: https://bugs.launchpad.net/bugs/1931727



Checking if there is enough room in between the offset of the
two subsequent field so that data of field 2 will not overlap
the data of field 1.

Change-Id: I96f656bb25878a302e7de109dd8f981045ed52e7
Signed-off-by: Nitin LNU <nlakra@codeaurora.org>
(cherry picked from commit 83ea92bb739cf0d979d14649830b27afd69e729f)
Signed-off-by: Shrirang Bagul <shrirang.bagul@canonical.com>