Revert "platforms/astbmc: Temporary reboot workaround"
Revert "platforms/astbmc: Temporary reboot workaround"

This reverts commit 7185393df6d7d806811b827fabce1d8ad3e05fff.

Now that we have the correct behaviour in the BMC, we can go back
to sending the correct ipmi command for rebooting the machine.

Signed-off-by: Joel Stanley <4816dabf8db1bc6cac35b3a24cab2ff844b5b0c7@jms.id.au>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

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