mm/hexagon: prepare for removing num_physpages and simplify mem_init()

Prepare for removing num_physpages and simplify mem_init().
Signed-off-by: NJiang Liu <jiang.liu@huawei.com>
Cc: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/hexagon/mm/init.c

@@ -71,9 +71,7 @@ void __init mem_init(void)
 {
 	/*  No idea where this is actually declared.  Seems to evade LXR.  */
 	free_all_bootmem();
-	num_physpages = bootmem_lastpg-ARCH_PFN_OFFSET;
-
-	printk(KERN_INFO "totalram_pages = %ld\n", totalram_pages);
+	mem_init_print_info(NULL);
 
 	/*
 	 *  To-Do:  someone somewhere should wipe out the bootmem map