soc/amd/cezanne: Add SPI registers

These are identical to picasso.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I3ef4c51ef6d656b3b035d97a56b1875b40e89210
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50445
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/soc/amd/cezanne/include/soc/lpc.h

@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_CEZANNE_LPC_H
+#define AMD_CEZANNE_LPC_H
+
+#define SPIROM_BASE_ADDRESS_REGISTER	0xa0
+#define   SPI_BASE_ALIGNMENT		BIT(8)
+#define   SPI_BASE_RESERVED		(BIT(5) | BIT(6) | BIT(7))
+#define   PSP_SPI_MMIO_SEL		BIT(4)
+#define   ROUTE_TPM_2_SPI		BIT(3)
+#define   SPI_ABORT_ENABLE		BIT(2)
+#define   SPI_ROM_ENABLE		BIT(1)
+#define   SPI_ROM_ALT_ENABLE		BIT(0)
+#define   SPI_PRESERVE_BITS		(BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4))
+
+#endif /* AMD_CEZANNE_LPC_H */