powerpc/mm/hash: Add pr_fmt() to hash_utils64.c

Make the printks look a bit nicer by adding a prefix.

Radix config now do
 radix-mmu: Page sizes from device-tree:
 radix-mmu: Page size shift = 12 AP=0x0
 radix-mmu: Page size shift = 16 AP=0x5
 radix-mmu: Page size shift = 21 AP=0x1
 radix-mmu: Page size shift = 30 AP=0x2

This patch update hash config to do similar dmesg output. With the patch we have

 hash-mmu: Page sizes from device-tree:
 hash-mmu: base_shift=12: shift=12, sllp=0x0000, avpnm=0x00000000, tlbiel=1, penc=0
 hash-mmu: base_shift=12: shift=16, sllp=0x0000, avpnm=0x00000000, tlbiel=1, penc=7
 hash-mmu: base_shift=12: shift=24, sllp=0x0000, avpnm=0x00000000, tlbiel=1, penc=56
 hash-mmu: base_shift=16: shift=16, sllp=0x0110, avpnm=0x00000000, tlbiel=1, penc=1
 hash-mmu: base_shift=16: shift=24, sllp=0x0110, avpnm=0x00000000, tlbiel=1, penc=8
 hash-mmu: base_shift=20: shift=20, sllp=0x0111, avpnm=0x00000000, tlbiel=0, penc=2
 hash-mmu: base_shift=24: shift=24, sllp=0x0100, avpnm=0x00000001, tlbiel=0, penc=0
 hash-mmu: base_shift=34: shift=34, sllp=0x0120, avpnm=0x000007ff, tlbiel=0, penc=3

Signed-off-by: Aneesh Kumar K.V <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>

Author: kvaneesh

arch/powerpc/mm/hash_utils_64.c

@@ -21,6 +21,7 @@
 #undef DEBUG
 #undef DEBUG_LOW
 
+#define pr_fmt(fmt) "hash-mmu: " fmt
 #include <linux/spinlock.h>
 #include <linux/errno.h>
 #include <linux/sched/mm.h>