lib: sbi: Correct typo in faults delegation CSR name

Correcting the name of faults delegation CSR
%s/mfdeleg/medeleg

Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

lib/sbi/sbi_platform.c

@@ -20,7 +20,7 @@ static inline char *sbi_platform_feature_id2string(unsigned long feature)
 
 	switch (feature) {
 	case SBI_PLATFORM_HAS_MFAULTS_DELEGATION:
-		fstr = "mfdeleg";
+		fstr = "medeleg";
 		break;
 	default:
 		break;