llext: (cosmetic) log uniformity cleanups

Use the more compact %#x format for printing out hexadecimal values in
the LLEXT subsystem. This also uses a clearer wording for the
llext_link() log message that avoids repeating information.

No functional change is introduced by this commit.

Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
3 files changed