Nami: Remove local oem variable
Nami: Remove local oem variable

oem is also defined as a global in board.c. This removes a local
variable of the same name to avoid confusion.

Signed-off-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>

BUG=none
BRANCH=none
TEST=Verify LEDs' behavior doesn't change on Sona.

Change-Id: I5e4d2e44f8770d6cdbac368ce93b8a6a0a0af83b
Reviewed-on: https://chromium-review.googlesource.com/1354491
Commit-Ready: ChromeOS CL Exonerator Bot <fa429e5907f00867f797423aea74327bb02c91b6@appspot.gserviceaccount.com>
Tested-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>
Reviewed-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec