sdt: Use the "cc" operand modifier for the address of probes for GCC 15+HEADmain

This is required for GCC on RISC-V.  The GCC 15 docs claim that "cc" is
similar to "c" except that it "tries harder".

NB: I have not yet found a way to make the DTrace probes compile on
RISC-V with older versions of GCC.

Reviewed by:	markj
Differential Revision:	https://reviews.freebsd.org/D54964

0 files changed, 0 insertions, 0 deletions