Adopted paren-cond ternary operator style

So:

  x = (cond) ? yes : no;

Where there are always parentheses around the condition, even if not
required for disambiguity. Additional parentheses are always allowed,
but the parenthesized condition helps signal that a ternary operator is
coming earlier in the expression.

This style has grown on me as I think it helps code readability. It
reminds me of the required parentheses for if/while statements.

Might as well adopt codebase-wide.

lfs_util.h

@@ -187,7 +187,7 @@ static inline int32_t lfs_sclamp32(int32_t a, int32_t min, int32_t max) {
 
 // Absolute value of signed numbers
 static inline int32_t lfs_abs32(int32_t a) {
-    return a < 0 ? -a : a;
+    return (a < 0) ? -a : a;
 }
 
 // TODO how many of these do we actually need