devel/freebsd-gcc*: Update kernel printf format checking for %b

[jhb]

Summary

• Permit the l and ll size modifiers to be used with '%b' for GCC 12/13 (GCC 14/15 already permitted these).

• Permit the '#' modifier to be used with %b. This isn't documented but the RISC-V kernel uses this.

[mhorne]

Not knowledgeable here but it seems correct.