A comment in subr_devmap.c mentions that devmap_print_table() should

be called on bootverbose.  Do so on RISV-V too.

Submitted by:	Nicholas O'Brien <nickisobrien_gmail.com>
Reviewed by:	imp, kp
Sponsored by:	Axiado
Differential Revision:	https://reviews.freebsd.org/D21998

sys/riscv/riscv/machdep.c

@@ -158,6 +158,8 @@ cpu_startup(void *dummy)
 	printf("avail memory = %ju (%ju MB)\n",
 	    ptoa((uintmax_t)vm_free_count()),
 	    ptoa((uintmax_t)vm_free_count()) / (1024 * 1024));
+	if (bootverbose)
+		devmap_print_table();
 
 	bufinit();
 	vm_pager_bufferinit();