x86: pin timer related get functions
x86: pin timer related get functions

Both arch_k_cycle_get_32() and z_tsc_read() are marked inline.
However, compiler may decide not to inline them which would put
them in the generic text section. Pin them in physical memory
as they are frequently used functions to avoid page fault costs.

Signed-off-by: Daniel Leung <d94e04d205b5962d7873a139ef298b03c1717f72@intel.com>

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