cpufreq: ti-cpufreq: Add support for AM62A7

Add support for TI K3 AM62A7 SoC to read speed and revision values from
hardware and pass to OPP layer. AM62A7 has the same A53 and efuse
configuration as AM625. Thus, soc_data from AM625 is reused.

Based on AM625 CPUFreq patch series by Dave Gerlach.

Signed-off-by: Vibhore Vardhan <vibhore@ti.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>