Keith Packard 4d834039c2 semihosting: Implement SYS_ELAPSED and SYS_TICKFREQ
These are part of Semihosting for AArch32 and AArch64 Release 2.0

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210107170717.2098982-8-keithp@keithp.com>
Message-Id: <20210108224256.2321-19-alex.bennee@linaro.org>
2021-01-18 10:05:06 +00:00
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