Update notes for submitted changes

* encore defconfigs: enable netfilter raw tables
* encore defconfigs: enable more filesystem I/O charsets
* ARM: OMAP2+: PM: fix return value check in omap2_set_init_voltage()
* ARM: OMAP2+: SmartReflex: fix return value check in sr_dev_init()
* ARM: OMAP3: Fix CM register bit masks