treewide: capitalize 'BIOS'

Also replace 'BIOS' by coreboot when the image is 'coreboot.rom'.

Change-Id: I8303b7baa9671f19a036a59775026ffd63c85273
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38932
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

util/inteltool/spi.c

@@ -22,7 +22,7 @@ static const io_register_t pch_bios_cntl_registers[] = {
 	{ 0x1, 1, "BLE - lock enable" },
 	{ 0x2, 2, "SPI Read configuration" },
 	{ 0x4, 1, "TopSwapStatus" },
-	{ 0x5, 1, "SMM Bios Write Protect Disable" },
+	{ 0x5, 1, "SMM BIOS Write Protect Disable" },
 	{ 0x6, 2, "reserved" },
 };