ipmi_ssif: Rename idle state and check

stable inclusion
from stable-v4.19.283
commit 13b3a05b5b03b4fce5a9ea03dc91159dea1f6ef9
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7BZ5U
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=13b3a05b5b03b4fce5a9ea03dc91159dea1f6ef9



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[ Upstream commit 8230831c ]

Rename the SSIF_IDLE() to IS_SSIF_IDLE(), since that is more clear, and
rename SSIF_NORMAL to SSIF_IDLE, since that's more accurate.

Cc: stable@vger.kernel.org
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Stable-dep-of: 6d2555cd ("ipmi: fix SSIF not responding under certain cond.")
Signed-off-by: Sasha Levin <sashal@kernel.org>

conflict:
	drivers/char/ipmi/ipmi_ssif.c

Signed-off-by: Yi Yang <yiyang13@huawei.com>
Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>