require EXPORT_SYMBOL_GPL symbols for symbol_get v2

Hi all,

this series changes symbol_get to only work on EXPORT_SYMBOL_GPL
as nvidia is abusing the lack of this check to bypass restrictions
on importing symbols from proprietary modules.

Changes since v1:
 - stop using symbol_get for sharpsl_pm.c (Arnd)
 - stop using symbol_get for au1xmmc platform irq handlers
 - better (and simpler) error reporting

Diffstat:
 arch/arm/mach-pxa/sharpsl_pm.c                   |    2 --
 arch/arm/mach-pxa/spitz.c                        |   14 +-------------
 arch/mips/alchemy/devboards/db1000.c             |    8 +-------
 arch/mips/alchemy/devboards/db1200.c             |   19 ++-----------------
 arch/mips/alchemy/devboards/db1300.c             |   10 +---------
 drivers/mmc/host/Kconfig                         |    4 ++--
 drivers/net/ethernet/freescale/enetc/enetc_ptp.c |    2 +-
 drivers/rtc/rtc-ds1685.c                         |    2 +-
 kernel/module/main.c                             |   14 +++++++++++---
 9 files changed, 20 insertions(+), 55 deletions(-)