LoongArch: Add HWCAP_LOONGARCH_CPUCFG to elf_hwcap

HWCAP_LOONGARCH_CPUCFG is missing in elf_hwcap, so add it for glibc's
later use.

Cc: stable@vger.kernel.org
Reported-by: Yinyu Cai <caiyinyu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

arch/loongarch/kernel/cpu-probe.c

@@ -94,7 +94,7 @@ static void cpu_probe_common(struct cpuinfo_loongarch *c)
 	c->options = LOONGARCH_CPU_CPUCFG | LOONGARCH_CPU_CSR |
 		     LOONGARCH_CPU_TLB | LOONGARCH_CPU_VINT | LOONGARCH_CPU_WATCH;
 
-	elf_hwcap |= HWCAP_LOONGARCH_CRC32;
+	elf_hwcap = HWCAP_LOONGARCH_CPUCFG | HWCAP_LOONGARCH_CRC32;
 
 	config = read_cpucfg(LOONGARCH_CPUCFG1);
 	if (config & CPUCFG1_UAL) {