cpu/intel/{haswell,model_206{5,a}x}: Use MSR_CORE_THREAD_COUNT for msr at 0x35

Regarding 64 and IA-32 Architectures Software Developer’s Manual, the register
name of the msr at 0x35 is MSR_CORE_THREAD_COUNT.

Change-Id: I5134619dc3a42187ddd5f46c85873c4278229e27
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33015
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/cpu/intel/haswell/haswell_init.c

@@ -732,7 +732,7 @@ static int get_cpu_count(void)
 	int num_threads;
 	int num_cores;
 
-	msr = rdmsr(CORE_THREAD_COUNT_MSR);
+	msr = rdmsr(MSR_CORE_THREAD_COUNT);
 	num_threads = (msr.lo >> 0) & 0xffff;
 	num_cores = (msr.lo >> 16) & 0xffff;
 	printk(BIOS_DEBUG, "CPU has %u cores, %u threads enabled.\n",