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`PMF_ARM_TIF_IMPL_ID` should be set to 0x41.  The code already left
shifts it by 24 bit positions so this was overflowing.

This fixes a build error with GCC 6.2 when
`ENABLE_RUNTIME_INSTRUMENTATION` is set.

Change-Id: I4c99d48ea7ce3d76e9edd1325b1979994db2c0fb
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>