[PULL][Trusty] arm64: efi-rtc support

[dann frazier]

Now that trusty can boot in EFI mode, we should also add efi-rtc
support. These are the same cherry picks as those that recently went
into utopic. This will resolve LP: #1441291 for trusty.
 
The following changes since commit 06743ed9622dbd3e926bdfdf4c17fdc3030629d0:

  UBUNTU: [Config] CONFIG_{EFI_PARAMS_FROM_FDT,GENERIC_EARLY_IOREMAP,LIBFDT}=y (2015-04-24 17:31:31 +0100)

are available in the git repository at:

  git://kernel.ubuntu.com/dannf/trusty-xgene.git efi-rtc

for you to fetch changes up to 1dd142f47247ae3ae773abd89370fd3a96dc31b3:

  rtc: Disable EFI rtc for x86 (2015-04-24 11:37:48 -0600)

----------------------------------------------------------------
Mark Salter (1):
      rtc: ia64: allow other architectures to use EFI RTC

Matt Fleming (1):
      rtc: Disable EFI rtc for x86

dann frazier (1):
      UBUNTU: [Config] CONFIG_RTC_DRV_EFI=y on arm64

 arch/ia64/kernel/time.c                   | 15 ---------------
 debian.master/config/config.common.ubuntu |  1 +
 drivers/rtc/Kconfig                       |  2 +-
 drivers/rtc/Makefile                      |  4 ++++
 drivers/rtc/rtc-efi-platform.c            | 31 +++++++++++++++++++++++++++++++
 5 files changed, 37 insertions(+), 16 deletions(-)
 create mode 100644 drivers/rtc/rtc-efi-platform.c