target/alpha: Replace ldtul_p() -> ldq_p()

The Alpha target is only built for 64-bit.
Using ldtul_p() is pointless, replace by ldq_p().

Mechanical change doing:

  $ sed -i -e 's/ldtul_p/ldq_p/' $(git grep -wl ldtul_p target/alpha/)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241004163042.85922-4-philmd@linaro.org>

target/alpha/gdbstub.c

@@ -59,7 +59,7 @@ int alpha_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
 int alpha_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
 {
     CPUAlphaState *env = cpu_env(cs);
-    target_ulong tmp = ldtul_p(mem_buf);
+    target_ulong tmp = ldq_p(mem_buf);
     CPU_DoubleU d;
 
     switch (n) {