The ls_uart file accidentally includes two headers from asm-ppc that
are no longer needed but cause a broken build in some configurations.
Kill the includes to fix the build.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/powerpc/platforms/embedded6xx/ls_uart.c b/arch/powerpc/platforms/embedded6xx/ls_uart.c
index d0bee9f..3b023b0 100644
--- a/arch/powerpc/platforms/embedded6xx/ls_uart.c
+++ b/arch/powerpc/platforms/embedded6xx/ls_uart.c
@@ -4,8 +4,6 @@
 #include <linux/serial_reg.h>
 #include <linux/serial_8250.h>
 #include <asm/io.h>
-#include <asm/mpc10x.h>
-#include <asm/ppc_sys.h>
 #include <asm/prom.h>
 #include <asm/termbits.h>
 

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