fix spelling in hw sub directory

Correct obvious spelling errors in qemu/hw directory.

Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
diff --git a/hw/etraxfs_pic.c b/hw/etraxfs_pic.c
index 72cbdb8..993d6a8 100644
--- a/hw/etraxfs_pic.c
+++ b/hw/etraxfs_pic.c
@@ -53,7 +53,7 @@
 
     fs->regs[R_R_MASKED_VECT] = fs->regs[R_R_VECT] & fs->regs[R_RW_MASK];
 
-    /* The ETRAX interrupt controller signals interrupts to teh core
+    /* The ETRAX interrupt controller signals interrupts to the core
        through an interrupt request wire and an irq vector bus. If 
        multiple interrupts are simultaneously active it chooses vector 
        0x30 and lets the sw choose the priorities.  */