Added newer platform files.

The build can now be done with fine-grain conditions on how to determine
drivers, platforms, arch, subarch etc.

src/platform/ab926/SConscript

@@ -0,0 +1,10 @@
+
+
+# Inherit global environment
+Import('env')
+
+# The set of source files associated with this SConscript file.
+src_local = ['printascii.S','platform.c', 'uart.c', 'timer.c', 'irq.c']
+
+obj = env.Object(src_local)
+Return('obj')

src/platform/eb/SConscript

@@ -0,0 +1,10 @@
+
+
+# Inherit global environment
+Import('env')
+
+# The set of source files associated with this SConscript file.
+src_local = ['printascii.S','platform.c', 'uart.c', 'timer.c', 'irq.c']
+
+obj = env.Object(src_local)
+Return('obj')

src/platform/pb11mpcore/SConscript

@@ -0,0 +1,10 @@
+
+
+# Inherit global environment
+Import('env')
+
+# The set of source files associated with this SConscript file.
+src_local = ['printascii.S','platform.c', 'uart.c', 'timer.c', 'irq.c']
+
+obj = env.Object(src_local)
+Return('obj')

src/platform/pba8/SConscript

@@ -0,0 +1,10 @@
+
+
+# Inherit global environment
+Import('env')
+
+# The set of source files associated with this SConscript file.
+src_local = ['printascii.S','platform.c', 'uart.c', 'timer.c', 'irq.c']
+
+obj = env.Object(src_local)
+Return('obj')