ARM: tegra: add machine check for fix reg init

ARM: tegra: add machine check for fix reg init

add machine check before registering the
fixed regulator for various boards

Bug 1275005

Change-Id: Id0a1ed53c8db02ad61f2933fe9067d83106cebed
Signed-off-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-on: http://git-master/r/236376
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
Tested-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Chao Xu <cxu@nvidia.com>