[binutils-gdb] Fix gdb/spu-tdep.c build breakage

[sergiodj+buildbot at sergiodj dot net]

*** TEST RESULTS FOR COMMIT a655456c134e5e02bab33941e1c738ca33905d23 ***

Author: Pedro Alves <palves@redhat.com>
Branch: master
Commit: a655456c134e5e02bab33941e1c738ca33905d23

Fix gdb/spu-tdep.c build breakage

Commit de63c46b549d ("Fix regresssion(internal-error) printing
subprogram argument (PR gdb/22670)") missed updating spu-tdep.c for
the block_lookup_symbol interface change, resulting in:

  ../../binutils-gdb/gdb/spu-tdep.c: In function void spu_catch_start(objfile*):
  ../../binutils-gdb/gdb/spu-tdep.c:1969:59: error: cannot convert domain_enum_tag to symbol_name_match_type for argument 3 to symbol* block_lookup_symbol(const block*, const char*, symbol_name_match_type, domain_enum)
	 sym = block_lookup_symbol (block, "main", VAR_DOMAIN);
							     ^

gdb/ChangeLog:
2018-01-05  Pedro Alves  <palves@redhat.com>

	* spu-tdep.c (spu_catch_start): Pass
	symbol_name_match_type::SEARCH_NAME to block_lookup_symbol.