ipmi: Add an IPMI command to get and set the RTC
ipmi: Add an IPMI command to get and set the RTC

Add IPMI GET_SEL_TIME and SET_SEL_TIME commands to the IPMI stack.

Signed-off-by: Alistair Popple <e9adbcf81c8a36ccc628e09bc92d0e25e1c8e501@popple.id.au>
Signed-off-by: Benjamin Herrenschmidt <a7089bb6e7e92505d88aaff006cbdd60cc9120b6@kernel.crashing.org>

legoater/skiboot,qemu/skiboot,shenki/skiboot,open-power/skiboot,neelegup/skiboot,open-power/skiboot,stewart-ibm/skiboot,legoater/skiboot,qemu/skiboot,shenki/skiboot,csmart/skiboot,legoater/skiboot,apopple/skiboot,ddstreet/skiboot,cyrilbur-ibm/skiboot,jk-ozlabs/skiboot,shenki/skiboot,ddstreet/skiboot,open-power/skiboot,open-power/skiboot,legoater/skiboot,open-power/skiboot,csmart/skiboot,legoater/skiboot,cyrilbur-ibm/skiboot,apopple/skiboot,shenki/skiboot,csmart/skiboot,stewart-ibm/skiboot,qemu/skiboot,mikey/skiboot,neelegup/skiboot,shenki/skiboot,jk-ozlabs/skiboot,neelegup/skiboot,qemu/skiboot,ddstreet/skiboot,mikey/skiboot,cyrilbur-ibm/skiboot,apopple/skiboot,jk-ozlabs/skiboot,qemu/skiboot,stewart-ibm/skiboot,mikey/skiboot