x86: Add scsi command to coreboot and qemu

This adds the scsi command to coreboot and qemu, to be in consistent
with other x86 targets.

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

arch/x86/cpu/coreboot/Kconfig

@@ -10,6 +10,7 @@ config SYS_COREBOOT
 	imply MMC_PCI
 	imply MMC_SDHCI
 	imply MMC_SDHCI_SDMA
+	imply SCSI
 	imply SCSI_AHCI
 	imply SPI_FLASH
 	imply SYS_NS16550

arch/x86/cpu/qemu/Kconfig

@@ -7,6 +7,7 @@ config QEMU
 	select ARCH_EARLY_INIT_R
 	imply AHCI_PCI
 	imply E1000
+	imply SCSI
 	imply SCSI_AHCI
 	imply SYS_NS16550
 	imply USB