ARM: tegra: laguna: correct avdd_dsi_csi owner

ARM: tegra: laguna: correct avdd_dsi_csi owner

avdd_dsi_csi regulator is owned by vi.0 and vi.1. With the wrong name
of owner like "vi", driver will fail to get this regulator:

"nvhost_vi_init: couldn't get regulator"

Bug 1377330
Bug 1398103

Change-Id: Ibba0e8afc5c353e0a7f41f6996313afc7e0f0f2e
Signed-off-by: Bryan Wu <pengw@nvidia.com>
Reviewed-on: http://git-master/r/289323
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>