[llvm-symbolizer][test] Add explicit tests for CODE and DATA

These directives force the associated address to be interpreted as a
function or data respectively. CODE is the default when not specified.

Differential Revision: https://reviews.llvm.org/D96712

Reviewed by: MaskRay

GitOrigin-RevId: c96fee98dbff50356f5cc92724e1fcfec2865c42
2 files changed