soc: qcom: boot_stats: Adding new KPI markers and renaming the existing.

Adding early_domain and SHA/RSA compute time KPI markers.
Renaming few other markers to be more indicative.

Change-Id: I55c99ae0c65f0162ef56b2e59e10d1d92ec76a58
Signed-off-by: Meghana Ashok <meghanaa@codeaurora.org>