ANDROID: kallsyms: increase KSYM_NAME_LEN

Clang generates __typeid__ symbols that are longer than 128 characters
when CFI is enabled. Increase KSYM_NAME_LEN to accommodate for this.

Bug: 148470764
Bug: 154088315
Change-Id: I3be253b844d48948ae85b912c432d7234ff33c48
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>