IPMI: Fix corner case eSEL logging issue
IPMI: Fix corner case eSEL logging issue

eSEL logging fails, if eSEL event size is multiples of IPMI
buffer size.

Signed-off-by: Vasant Hegde <a6d753843573f7bfed5075c1e875b0be8007a0ab@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

mikey/skiboot,legoater/skiboot,open-power/skiboot,csmart/skiboot,legoater/skiboot,shenki/skiboot,csmart/skiboot,qemu/skiboot,csmart/skiboot,legoater/skiboot,stewart-ibm/skiboot,open-power/skiboot,shenki/skiboot,shenki/skiboot,apopple/skiboot,open-power/skiboot,legoater/skiboot,apopple/skiboot,stewart-ibm/skiboot,shenki/skiboot,legoater/skiboot,apopple/skiboot,open-power/skiboot,mikey/skiboot,stewart-ibm/skiboot,qemu/skiboot,qemu/skiboot,mikey/skiboot,open-power/skiboot,shenki/skiboot,qemu/skiboot,qemu/skiboot