Fix a few file permission problems.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/siemens/SMN42/flash.c b/board/siemens/SMN42/flash.c
old mode 100755
new mode 100644
diff --git a/board/xilinx/ml401/xparameters.h b/board/xilinx/ml401/xparameters.h
old mode 100755
new mode 100644
diff --git a/cpu/microblaze/cache.c b/cpu/microblaze/cache.c
old mode 100755
new mode 100644
diff --git a/cpu/microblaze/interrupts.c b/cpu/microblaze/interrupts.c
old mode 100755
new mode 100644
diff --git a/cpu/microblaze/irq.S b/cpu/microblaze/irq.S
old mode 100755
new mode 100644
diff --git a/cpu/ppc4xx/traps.c b/cpu/ppc4xx/traps.c
old mode 100755
new mode 100644
diff --git a/drivers/enc28j60.c b/drivers/enc28j60.c
old mode 100755
new mode 100644
diff --git a/include/asm-microblaze/asm.h b/include/asm-microblaze/asm.h
old mode 100755
new mode 100644
diff --git a/include/configs/SMN42.h b/include/configs/SMN42.h
old mode 100755
new mode 100644
diff --git a/include/configs/lpc2292sodimm.h b/include/configs/lpc2292sodimm.h
old mode 100755
new mode 100644