All the kernel header files now use pargma once rather than the ifndef,
as the pre-processed C files do not change while header files
are protected with pargma once. This will also solve any naming issues
caused by ifndef.
This commit also converts our own copyright headers to directly use
SPDX, but leaves all other copyright header intact, only adding the
SPDX ident. As far as possible this commit also merges multiple
Data61 copyright statements/headers into one for consistency.
On exynos5 platforms the Arm Generic timer is available and is used for
MCS, but the mct.h is still used as the mct device needs to be
configured to implement the Arm Generic timer. mct.h is a common header
for register definitions while exynos4412-mct.h is used for implementing
timer functions on the exynos4 where the mct doesn't support being the
Arm generic timer.
Also remove misplaced initGenericTimer() declaration.
