--legacyalign, --no_legacyalign are deprecated from ARMC6 compiler, in order to
remove deprecated flags all linker files (GCC and IAR as well to have uniformity)
should strictly align to 8-byte boundary
This patch updates DualTimer_DisableInterrupt to
disable the interrupt timers individually.
In addition, it updates lp_ticker accordingly.
Signed-off-by: Marc Moreno <marc.morenoberengue@arm.com>