crypto: ccp - Add a header for multiple drivers to use `__psp_pa`

The TEE subdriver for CCP, the amdtee driver and the i2c-designware-amdpsp
drivers all include `psp-sev.h` even though they don't use SEV
functionality.

Move the definition of `__psp_pa` into a common header to be included
by all of these drivers.

Reviewed-by: Jan Dabros <[e-mail]>
Acked-by: Jarkko Nikula <[e-mail]> # For the drivers/i2c/busses/i2c-designware-amdpsp.c
Acked-by: Sumit Garg <[e-mail]> # For TEE subsystem bits
Acked-by: Tom Lendacky <[e-mail]>
Acked-by: Sean Christopherson <[e-mail]> # KVM
Signed-off-by: Mario Limonciello <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

arch/x86/kvm/svm/sev.c

···
 #include <linux/kvm_host.h>
 #include <linux/kernel.h>
 #include <linux/highmem.h>
+#include <linux/psp.h>
 #include <linux/psp-sev.h>
 #include <linux/pagemap.h>
 #include <linux/swap.h>

drivers/crypto/ccp/sev-dev.c

···
 #include <linux/cpufeature.h>
 #include <linux/fs.h>
 #include <linux/fs_struct.h>
+#include <linux/psp.h>
 
 #include <asm/smp.h>
 #include <asm/cacheflush.h>

drivers/crypto/ccp/tee-dev.c

···
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/gfp.h>
-#include <linux/psp-sev.h>
+#include <linux/psp.h>
 #include <linux/psp-tee.h>
 
 #include "psp-dev.h"

drivers/i2c/busses/i2c-designware-amdpsp.c

···
 #include <linux/bits.h>
 #include <linux/i2c.h>
 #include <linux/io-64-nonatomic-lo-hi.h>
-#include <linux/psp-sev.h>
+#include <linux/psp.h>
 #include <linux/types.h>
 #include <linux/workqueue.h>
 

drivers/tee/amdtee/call.c

···
 #include <linux/tee_drv.h>
 #include <linux/psp-tee.h>
 #include <linux/slab.h>
-#include <linux/psp-sev.h>
+#include <linux/psp.h>
 #include "amdtee_if.h"
 #include "amdtee_private.h"
 

drivers/tee/amdtee/shm_pool.c

···
 
 #include <linux/slab.h>
 #include <linux/tee_drv.h>
-#include <linux/psp-sev.h>
+#include <linux/psp.h>
 #include "amdtee_private.h"
 
 static int pool_op_alloc(struct tee_shm_pool *pool, struct tee_shm *shm,

include/linux/psp-sev.h

···
 
 #include <uapi/linux/psp-sev.h>
 
-#ifdef CONFIG_X86
-#include <linux/mem_encrypt.h>
-
-#define __psp_pa(x)	__sme_pa(x)
-#else
-#define __psp_pa(x)	__pa(x)
-#endif
-
 #define SEV_FW_BLOB_MAX_SIZE	0x4000	/* 16KB */
 
 /**

include/linux/psp.h

···
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __PSP_H
+#define __PSP_H
+
+#ifdef CONFIG_X86
+#include <linux/mem_encrypt.h>
+
+#define __psp_pa(x)	__sme_pa(x)
+#else
+#define __psp_pa(x)	__pa(x)
+#endif
+
+#endif /* __PSP_H */