random: do not include <asm/archrandom.h> from random.h

The <asm/archrandom.h> header is a random.c private detail, not
something to be called by other code. As such, don't make it
automatically available by way of random.h.

Cc: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

arch/powerpc/kernel/setup-common.c

@@ -59,6 +59,7 @@
 #include <asm/xmon.h>
 #include <asm/cputhreads.h>
 #include <mm/mmu_decl.h>
+#include <asm/archrandom.h>
 #include <asm/fadump.h>
 #include <asm/udbg.h>
 #include <asm/hugetlb.h>

arch/s390/kernel/setup.c

@@ -52,6 +52,7 @@
 #include <linux/hugetlb.h>
 #include <linux/kmemleak.h>
 
+#include <asm/archrandom.h>
 #include <asm/boot_data.h>
 #include <asm/ipl.h>
 #include <asm/facility.h>

drivers/char/hw_random/powernv-rng.c

@@ -11,6 +11,7 @@
 #include <linux/platform_device.h>
 #include <linux/random.h>
 #include <linux/hw_random.h>
+#include <asm/archrandom.h>
 
 static int powernv_rng_read(struct hwrng *rng, void *data, size_t max, bool wait)
 {

drivers/char/hw_random/s390-trng.c

@@ -23,6 +23,7 @@
 #include <linux/sched/signal.h>
 #include <asm/debug.h>
 #include <asm/cpacf.h>
+#include <asm/archrandom.h>
 
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("IBM Corporation");

drivers/char/random.c

@@ -56,6 +56,7 @@
 #include <linux/sched/isolation.h>
 #include <crypto/chacha.h>
 #include <crypto/blake2s.h>
+#include <asm/archrandom.h>
 #include <asm/processor.h>
 #include <asm/irq.h>
 #include <asm/irq_regs.h>

include/linux/random.h

@@ -152,8 +152,6 @@ declare_get_random_var_wait(long, unsigned long)
  */
 #include <linux/prandom.h>
 
-#include <asm/archrandom.h>
-
 #ifdef CONFIG_SMP
 int random_prepare_cpu(unsigned int cpu);
 int random_online_cpu(unsigned int cpu);