kernel: update SP2 OPENEULER_MINOR value to 2

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I796HQ

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The version information OPENEULER_MINOR is not right in SP2,
update it's value to 2.
Signed-off-by: NJialin Zhang <zhangjialin11@huawei.com>

Makefile

@@ -5,7 +5,7 @@ SUBLEVEL = 0
 EXTRAVERSION =
 NAME = Kleptomaniac Octopus
 OPENEULER_MAJOR = 2203
-OPENEULER_MINOR = 1
+OPENEULER_MINOR = 2
 
 # *DOCUMENTATION*
 # To see a list of typical targets execute "make help"