sandbox: Rename PCI ID for swap_case to be more specific

Rename this ID to SANDBOX_PCI_SWAP_CASE_EMUL_ID since it is more
descriptive and allows us to add new PCI emulators without any conflict or
confusion.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
3 files changed