U-Boot: move mmu.cpp to arch/arm/arch_mmu.cpp

* only contains ARM stuff anyway.
* PPC implementation will be very different anyway.

src/system/boot/platform/u-boot/Jamfile

@@ -40,7 +40,6 @@ KernelMergeObject boot_platform_u-boot_common.o :
 	cpu.cpp
 	uimage.cpp
 	video.cpp
-	mmu.cpp
 	$(genericPlatformSources)
 
 

src/system/boot/platform/u-boot/arch/arm/Jamfile

@@ -12,7 +12,7 @@ KernelMergeObject boot_platform_u-boot_arm.o :
 	# must come first to have _start_* at correct locations
 	shell.S
 
-	#arch_mmu.cpp
+	arch_mmu.cpp
 	#arch_cpu_asm.S
 	arch_start_kernel.S
 	arch_cpu.cpp