ARM: mvebu: enable options for Seagate NAS in mvebu_v7_defconfig

This patch enables the following options needed by the Seagate
Personal Cloud 1 and 2-Bay and the Seagate NAS 2 and 4-Bay:

SATA_AHCI
POWER_RESET_GPIO
RTC_DRV_DS1307
RTC_DRV_PCF8563

Additionnally this patch also enables NEW_LEDS which was missing for
some reasons.

Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>