powerpc/85xx: fix definition of MAS register macros

Some of the MAS register macros do not protect the parameter with
parentheses, which could cause wrong values if the parameter includes
operators.

Also fix the definition of TSIZE_TO_BYTES() so that it actually uses
the parameter.  This hasn't caused any problems to date because the
parameter was always been 'tsize'.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/include/asm/mmu.h

@@ -392,17 +392,17 @@ extern void print_bats(void);
  */
 
 #define MAS0_TLBSEL_MSK	0x30000000
-#define MAS0_TLBSEL(x)	((x << 28) & MAS0_TLBSEL_MSK)
+#define MAS0_TLBSEL(x)	(((x) << 28) & MAS0_TLBSEL_MSK)
 #define MAS0_ESEL_MSK	0x0FFF0000
-#define MAS0_ESEL(x)	((x << 16) & MAS0_ESEL_MSK)
+#define MAS0_ESEL(x)	(((x) << 16) & MAS0_ESEL_MSK)
 #define MAS0_NV(x)	((x) & 0x00000FFF)
 
 #define MAS1_VALID	0x80000000
 #define MAS1_IPROT	0x40000000
-#define MAS1_TID(x)	((x << 16) & 0x3FFF0000)
+#define MAS1_TID(x)	(((x) << 16) & 0x3FFF0000)
 #define MAS1_TS		0x00001000
-#define MAS1_TSIZE(x)	((x << 8) & 0x00000F00)
-#define TSIZE_TO_BYTES(x) ((phys_addr_t)(1UL << ((tsize * 2) + 10)))
+#define MAS1_TSIZE(x)	(((x) << 8) & 0x00000F00)
+#define TSIZE_TO_BYTES(x) (1ULL << (((x) * 2) + 10))
 
 #define MAS2_EPN	0xFFFFF000
 #define MAS2_X0		0x00000040