arm64: User die() instead of panic() in do_page_fault()

The former gives better error reporting on unhandled permission faults
(introduced by the UAO patches).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index a8eafece..44e56de 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -235,10 +235,10 @@
 
 	if (permission_fault(esr) && (addr < USER_DS)) {
 		if (get_fs() == KERNEL_DS)
-			panic("Accessing user space memory with fs=KERNEL_DS");
+			die("Accessing user space memory with fs=KERNEL_DS", regs, esr);
 
 		if (!search_exception_tables(regs->pc))
-			panic("Accessing user space memory outside uaccess.h routines");
+			die("Accessing user space memory outside uaccess.h routines", regs, esr);
 	}
 
 	/*