target/i386: Fix carry flag for BLSI

BLSI has inverted semantics for C as compared to the other two
BMI1 instructions, BLSMSK and BLSR.  Introduce CC_OP_BLSI* for
this purpose.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2175
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240801075845.573075-3-richard.henderson@linaro.org>

target/i386/cpu.h

@@ -1339,6 +1339,11 @@ typedef enum {
     CC_OP_BMILGL,
     CC_OP_BMILGQ,
 
+    CC_OP_BLSIB, /* Z,S via CC_DST, C = SRC!=0; O=0; P,A undefined */
+    CC_OP_BLSIW,
+    CC_OP_BLSIL,
+    CC_OP_BLSIQ,
+
     /*
      * Note that only CC_OP_POPCNT (i.e. the one with MO_TL size)
      * is used or implemented, because the translation needs