ARC: thread_info.h: correct two typos in a comment

Fix typos of "separately" and "remains".

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Matthew Wilcox <willy@infradead.org> # "remains"
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: linux-snps-arc@lists.infradead.org
Signed-off-by: Vineet Gupta <vineetg@rivosinc.com>

Author: rddunlap

arch/arc/include/asm/thread_info.h

@@ -99,8 +99,8 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void)
 
 /*
  * _TIF_ALLWORK_MASK includes SYSCALL_TRACE, but we don't need it.
- * SYSCALL_TRACE is anyway seperately/unconditionally tested right after a
- * syscall, so all that reamins to be tested is _TIF_WORK_MASK
+ * SYSCALL_TRACE is anyway separately/unconditionally tested right after a
+ * syscall, so all that remains to be tested is _TIF_WORK_MASK
  */
 
 #endif /* _ASM_THREAD_INFO_H */