ARM: shmobile: r8a7791: Correct number of CPU cores

The r8a7791 only has 2 CPU CA15 cores, not 4 CA15 and 4  CA7 cores.
Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/smp-r8a7791.c

@@ -28,11 +28,7 @@
 static struct rcar_apmu_config r8a7791_apmu_config[] = {
 	{
 		.iomem = DEFINE_RES_MEM(0xe6152000, 0x88),
-		.cpus = { 0, 1, 2, 3 },
-	},
-	{
-		.iomem = DEFINE_RES_MEM(0xe6151000, 0x88),
-		.cpus = { 0x100, 0x0101, 0x102, 0x103 },
+		.cpus = { 0, 1 },
 	}
 };