tegra20: move tegra20 SoC code to arch/arm/cpu/tegra20-common

In preparation for splitting out the armv4t code from tegra20, move
the tegra20 SoC code to arch/arm/cpu/tegra20-common.  This code will
be compiled armv4t for the arm7tdmi and armv7 for the cortex A9.

Signed-off-by: Allen Martin <amartin@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/arch/arm/cpu/armv7/tegra20/Makefile b/arch/arm/cpu/armv7/tegra20/Makefile
index da62646..5f4035d 100644
--- a/arch/arm/cpu/armv7/tegra20/Makefile
+++ b/arch/arm/cpu/armv7/tegra20/Makefile
@@ -23,27 +23,16 @@
 # MA 02111-1307 USA
 #
 
-# The AVP is ARMv4T architecture so we must use special compiler
-# flags for any startup files it might use.
-CFLAGS_arch/arm/cpu/armv7/tegra20/ap20.o += -march=armv4t
-CFLAGS_arch/arm/cpu/armv7/tegra20/clock.o += -march=armv4t
-CFLAGS_arch/arm/cpu/armv7/tegra20/warmboot_avp.o += -march=armv4t
-
 include $(TOPDIR)/config.mk
 
 LIB	=  $(obj)lib$(SOC).o
 
-SOBJS	:= lowlevel_init.o
-COBJS-y	:= ap20.o board.o clock.o funcmux.o pinmux.o sys_info.o timer.o
-COBJS-$(CONFIG_TEGRA_CLOCK_SCALING) += emc.o
-COBJS-$(CONFIG_TEGRA_PMU) += pmu.o
 COBJS-$(CONFIG_USB_EHCI_TEGRA) += usb.o
-COBJS-$(CONFIG_TEGRA20_LP0) += crypto.o warmboot.o warmboot_avp.o
 COBJS-$(CONFIG_CMD_ENTERRCM) += cmd_enterrcm.o
 
 COBJS	:= $(COBJS-y)
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS) $(SOBJS))
+SRCS	:= $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
 
 all:	 $(obj).depend $(LIB)