ac/rgp: Fix single-bit-bitfield-constant-conversion warning
What does this MR do and why?
ac/rgp: Fix single-bit-bitfield-constant-conversion warning
../src/amd/common/ac_rgp.c:119:48: warning: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Wsingle-bit-bitfield-constant-conversion]
119 | header->flags.is_semaphore_queue_timing_etw = 1;
| ^ ~
Fixes: ed0c8522437 ("radv: add initial SQTT files generation support")
Signed-off-by: Vinson Lee <vlee@freedesktop.org>