Mark Spansion S25FL128P(0) tested for PREW

Read and write tested on ASUS KGPE-D16 with ASMB4 BMC module installed.

Change-Id: I4b4e3673f7019f38a3b6ab2f7002bbe56dc6de07
Signed-off-by: Timothy Pearson <tpearson@raptorengineering.com>

flashchips.c

@@ -11841,7 +11841,7 @@ const struct flashchip flashchips[] = {
 		.total_size	= 16384,
 		.page_size	= 256,
 		.feature_bits	= FEATURE_WRSR_WREN,
-		.tested		= TEST_UNTESTED,
+		.tested		= TEST_OK_PREW,
 		.probe		= probe_spi_rdid,
 		.probe_timing	= TIMING_ZERO,
 		.block_erasers	= {