spi25.c: Replace tab with space after '=' symbol

Trivial, only noticed while diff'ing with ChromiumOS fork.

Change-Id: I247d9cb1910a9afdb0e7bfe81515d51514da6550
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/46481
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
1 file changed