include/: spelling fixes

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

include/hw/virtio/virtio-net.h

@@ -109,7 +109,7 @@ typedef struct VirtioNetRscSeg {
     size_t size;
     uint16_t packets;
     uint16_t dup_ack;
-    bool is_coalesced;      /* need recal ipv4 header checksum, mark here */
+    bool is_coalesced;      /* need recall ipv4 header checksum, mark here */
     VirtioNetRscUnit unit;
     NetClientState *nc;
 } VirtioNetRscSeg;