trivial: Update licenses

All of these files saw significant changes, so we update the license to
reflect this.

libplatsupport,imx: Remove all timer constants

Now that the addresses of the registers and the IRQ numbers are being
read from the DTB, we no longer need these constants.

libplatsupport,imx: Move HW ops to driver level

Timer resource initialisation and the management of interrupts should
belong in the driver level and not the timer abstraction level. This
commits moves those operations down into the driver level for the i.MX
platforms.

Fix clock frequency for kzm

The KZM `ipg_clk` has a maximum target frequency of 62.5MHz according to
the manual. With typcal configuration of scalers relative to the
`mcu_main_clock` this will be the target frequency.

mcs: Rename CONFIG_KERNEL_RT to CONFIG_KERNEL_MCS

This is to be consistent with the name defined in the kernel.

util_libs: remove autoconf.h from util_libs

this commit removes autoconf.h generation from each lib and
append '#include <<lib_name>/gen_config.h>' after each
'#include <autoconf.h>' since autoconf.h is only the for the
kernel config now. This is a temporarily solution, since we
currently don't have a way to tell which header files each file
is trying to include when it includes 'autoconf.h'

Fix compilation on i.MX31 when !CONFIG_KERNEL_RT

Use EPIT1 as a timestamp timer for i.MX31 for RT

On the RT kernel, the kernel uses the GPT as opposed to master where the
kernel uses EPIT1.

Generify i.MX timers

This commit splits out imx timer functionality to remove the #ifdefs for
i.MX7. This is driven by the need on the RT kernel to use two EPITS
instead of an EPIT and GPT for the user level timer drivers, which makes
all the i.MX timers similar, in that they use a timer for timeouts and a
timer for the time, but different in that they all use different
combinations of timers.

plat/imx7: add initial support for imx7 SoC

trivial: use pragma once

fix licenses