plat-k3: drivers: add platform flavors for 62A and 62P devices

Even though the SA2UL integration on the AM62Ax and AM62Px platforms are
functionally identical to the AM62x platforms many, when building
OP-TEE, are using the platform name they are building and not 'am62x'
which leaves the SA2UL_BASE address undefined and builds to fail

    In file included from core/include/mm/core_memprot.h:9,
                     from core/include/kernel/interrupt.h:10,
                     from core/arch/arm/plat-k3/drivers/sa2ul_rng.c:12:
    core/arch/arm/plat-k3/./platform_config.h:91:34: error: ‘SA2UL_BASE’ undeclared here (not in a function); did you mean ‘SCU_BASE’?
       91 | #define RNG_BASE                (SA2UL_BASE + 0x10000)
          |                                  ^~~~~~~~~~

For now let's just define the AM62Ax and AM62Px platform flavors
identical to how AM62x is defined and add an #else statement to catch
when a undefined platform flavor tries to build the SA2UL driver

Signed-off-by: Bryan Brattlof <bb@ti.com>

Author: bryanbrattlof

core/arch/arm/plat-k3/drivers/sa2ul.c

@@ -121,7 +121,10 @@ static TEE_Result sa2ul_init(void)
 	start_address = RNG_BASE;
 	end_address = RNG_BASE + RNG_REG_SIZE - 1;
 	permissions[num_perm++] = (FW_BIG_ARM_PRIVID << 16) | FW_SECURE_ONLY;
-#if defined(PLATFORM_FLAVOR_am62x)
+#if defined(PLATFORM_FLAVOR_am62x) || \
+	defined(PLATFORM_FLAVOR_am62ax) || \
+	defined(PLATFORM_FLAVOR_am62px)
+
 	permissions[num_perm++] = (FW_TIFS_PRIVID << 16) | FW_NON_SECURE;
 #endif
 	ret = ti_sci_set_fwl_region(fwl_id, rng_region, num_perm,

core/arch/arm/plat-k3/platform_config.h

@@ -79,18 +79,24 @@
 #define SA2UL_TI_SCI_DEV_ID	133
 #define SA2UL_TI_SCI_FW_ID	35
 #define SA2UL_TI_SCI_FW_RGN_ID	0
-#elif defined(PLATFORM_FLAVOR_am62x)
+#elif defined(PLATFORM_FLAVOR_am62x) || \
+	defined(PLATFORM_FLAVOR_am62ax) || \
+	defined(PLATFORM_FLAVOR_am62px)
 #define SA2UL_BASE		0x40900000
 #define SA2UL_TI_SCI_DEV_ID	-1
 #define SA2UL_TI_SCI_FW_ID	66
 #define SA2UL_TI_SCI_FW_RGN_ID	1
+#elif defined(CFG_WITH_SOFTWARE_PRNG)
+#error "Undefined platform flavor! No SA2UL_BASE address is defined"
 #endif
 #define SA2UL_REG_SIZE		0x1000
 
 /* RNG */
 #define RNG_BASE		(SA2UL_BASE + 0x10000)
 #define RNG_REG_SIZE		0x1000
-#if defined(PLATFORM_FLAVOR_am62x)
+#if defined(PLATFORM_FLAVOR_am62x) || \
+	defined(PLATFORM_FLAVOR_am62ax) || \
+	defined(PLATFORM_FLAVOR_am62px)
 #define RNG_TI_SCI_FW_RGN_ID	2
 #else
 #define RNG_TI_SCI_FW_RGN_ID	3