scmi: Update protocols version to 2.0

The SCMI v2.0 specification has brought some changes into base, power domain
and performance protocols. For those protocols the spec dictates that the
version must be 0x20000.

This patch modifies the version for base, power domain and performance
protocols to comply with SCMI v2.0 specification.

Change-Id: I5dbb9a3d095e64f4f4eab08ddc3401119c70ada4
Signed-off-by: Nicola Mazzucato <nicola.mazzucato@arm.com>