x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper

commit d8df126 upstream.

Since

  923f3a2 ("x86/resctrl: Query LLC monitoring properties once during boot")

resctrl_cpu_detect() has been moved from common CPU initialization code to
the vendor-specific BSP init helper, while Hygon didn't put that call in their
code.

This triggers a division by zero fault during early booting stage on our
machines with X86_FEATURE_CQM* supported, where get_rdt_mon_resources() tries
to calculate mon_l3_config with uninitialized boot_cpu_data.x86_cache_occ_scale.

Add the missing resctrl_cpu_detect() in the Hygon BSP init helper.

  [ bp: Massage commit message. ]

Fixes: 923f3a2 ("x86/resctrl: Query LLC monitoring properties once during boot")
Signed-off-by: Tianxiang Peng <txpeng@tencent.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Hui Li <caelli@tencent.com>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/20250623093153.3016937-1-txpeng@tencent.com
Signed-off-by: Tianxiang Peng <txpeng@tencent.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 7207923d8453ebfb35667c1736169f2dd796772e)
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

Author: Tianxiang Peng

arch/x86/kernel/cpu/hygon.c

@@ -18,6 +18,7 @@
 #include <asm/page.h>
 #include <linux/module.h>
 #include <linux/init.h>
+#include <asm/resctrl.h>
 
 #include "cpu.h"
 
@@ -246,6 +247,8 @@ static void bsp_init_hygon(struct cpuinfo_x86 *c)
 			x86_amd_ls_cfg_ssbd_mask = 1ULL << 10;
 		}
 	}
+
+	resctrl_cpu_detect(c);
 }
 
 static void init_hygon_cap(struct cpuinfo_x86 *c)