ARM: wire up getrandom syscall

Add the new getrandom syscall for ARM.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/include/asm/unistd.h

@@ -19,7 +19,7 @@
  * This may need to be greater than __NR_last_syscall+1 in order to
  * account for the padding in the syscall table
  */
-#define __NR_syscalls  (384)
+#define __NR_syscalls  (388)
 
 /*
  * *NOTE*: This is a ghost syscall private to the kernel.  Only the

arch/arm/include/uapi/asm/unistd.h

@@ -410,6 +410,7 @@
 #define __NR_sched_getattr		(__NR_SYSCALL_BASE+381)
 #define __NR_renameat2			(__NR_SYSCALL_BASE+382)
 #define __NR_seccomp			(__NR_SYSCALL_BASE+383)
+#define __NR_getrandom			(__NR_SYSCALL_BASE+384)
 
 /*
  * The following SWIs are ARM private.

arch/arm/kernel/calls.S

@@ -393,6 +393,7 @@
 		CALL(sys_sched_getattr)
 		CALL(sys_renameat2)
 		CALL(sys_seccomp)
+		CALL(sys_getrandom)
 #ifndef syscalls_counted
 .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
 #define syscalls_counted