firmware: qcom: scm: Don't break compile test on non-ARM platforms

The introduction of __qcom_scm_set_boot_addr_mc() relies on
cpu_logical_map() and MPIDR_AFFINITY_LEVEL() from smp_plat.h, but only
ARM and ARM64 has this include file, so the introduction of this
dependency broke compile testing on e.g. x86_64.

Make the inclusion of smp_plat.h and the affected function depend on
ARM || ARM64 to allow the code to still be compiled.

Fixes: 55845f46 ("firmware: qcom: scm: Add support for MC boot address API")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211025025816.2937465-1-bjorn.andersson@linaro.org

drivers/firmware/qcom_scm.c

@@ -17,7 +17,9 @@
 #include <linux/reset-controller.h>
 #include <linux/arm-smccc.h>
 
+#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
 #include <asm/smp_plat.h>
+#endif
 
 #include "qcom_scm.h"
 
@@ -262,6 +264,7 @@ static bool __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
 	return ret ? false : !!res.result[0];
 }
 
+#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
 static int __qcom_scm_set_boot_addr_mc(void *entry, const cpumask_t *cpus,
 				       unsigned int flags)
 {
@@ -290,6 +293,13 @@ static int __qcom_scm_set_boot_addr_mc(void *entry, const cpumask_t *cpus,
 
 	return qcom_scm_call(__scm->dev, &desc, NULL);
 }
+#else
+static inline int __qcom_scm_set_boot_addr_mc(void *entry, const cpumask_t *cpus,
+					      unsigned int flags)
+{
+	return -EINVAL;
+}
+#endif
 
 static int __qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
 {