src/include: Remove spaces before ( and after )

Fix the following error messages found by checkpatch.pl:

ERROR: space prohibited after that open parenthesis '('
ERROR: space prohibited before that close parenthesis ')'

TEST=Build and run on Galileo Gen2

Change-Id: I2a9a0df640c51ff3efa83dde852dd6ff37ac3c06
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18651
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/include/symbols.h

@@ -111,6 +111,6 @@ extern u8 _eframebuffer[];
  * values from that definition will be used. If not, start, end and size will
  * all evaluate to 0. (We can't explicitly assign the symbols to 0 in the
  * assembly due to https://sourceware.org/bugzilla/show_bug.cgi?id=1038.) */
-#define DECLARE_OPTIONAL_REGION(name) asm (".weak _" #name ", _e" #name )
+#define DECLARE_OPTIONAL_REGION(name) asm (".weak _" #name ", _e" #name)
 
 #endif /* __SYMBOLS_H */