Cosmetics fixes

Signed-off-by: Pascal Brand <pascal.brand@st.com>
core/arm32: add traces in case of user TA abort

TA manager and TA mmu layer have specific trace handlers for TA aborts:
- dumping TA info.
- dumping TA mapping info.

Core log level displays physical memory and core information.
TA log level displays only TA virtual space information. Core log
level can display some teecore private information (i.e physical
addresses, TA manager structures, ...).

Generic helper uuid2str().

Signed-off-by: Pascal Brand <pascal.brand@st.com>