include: sbi_scratch: fix typo sbi_scratch -> HART id

Fix "sbi_scratch" to "HART id" to better reflect its purpose.

Signed-off-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260107032602.1143819-1-ycliang@andestech.com
Signed-off-by: Anup Patel <anup@brainfault.org>

Author: Leo Yu-Chi Liang

include/sbi/sbi_scratch.h

@@ -186,7 +186,7 @@ extern u32 sbi_scratch_hart_count;
 /** HART index to HART id table */
 extern u32 hartindex_to_hartid_table[];
 
-/** Get sbi_scratch from HART index */
+/** Get HART id from HART index */
 #define sbi_hartindex_to_hartid(__hartindex)		\
 ({							\
 	((__hartindex) < SBI_HARTMASK_MAX_BITS) ?	\