Add IRQBALANCE_BANNED_CPULIST to env file

Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>

misc/irqbalance.env

@@ -21,6 +21,21 @@
 #
 #IRQBALANCE_BANNED_CPUS=
 
+#
+# IRQBALANCE_BANNED_CPULIST
+#    The CPUs list which allows you to indicate which CPUs should
+#    be skipped when reblancing IRQs. CPU numbers in CPUs list will
+#    not have any IRQs assigned to them on rebalance.
+#
+#      The format of CPUs list is:
+#        <cpu number>,...,<cpu number>
+#      or a range:
+#        <cpu number>-<cpu number>
+#      or a mixture:
+#        <cpu number>,...,<cpu number>-<cpu number>
+#
+#IRQBALANCE_BANNED_CPULIST=
+
 #
 # IRQBALANCE_ARGS
 #    Append any args here to the irqbalance daemon as documented in the man