[NFC][lldb] Cleanup the ArchDefinitionEntry definitons. (#152618)
This patch has default initialization values for the "sub", "cpu_mask"
and "sub_mask" member variables of the ArchDefinitionEntry structure.
This can simplify and cleanup the ArchDefinitionEntry arrays by allowing
those that don't override the values to not have to initialize the
values in the definitions if they match the default values.
This patchs also disables clang format to align the values in the
columns for easier readability.