hw/net/lasi_i82596: Re-enable build

When converting to the shiny build-system-du-jour, a typo prevented the
last_i82596 driver from being built. Correct the config option name to
re-enable the build. And include "sysemu/sysemu.h" so it actually builds.

Fixes: b1419fa ("meson: convert hw/net")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2144
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Thomas Huth <thuth@redhat.com>

hw/net/lasi_i82596.c

@@ -14,6 +14,7 @@
 #include "qapi/error.h"
 #include "qemu/timer.h"
 #include "hw/sysbus.h"
+#include "sysemu/sysemu.h"
 #include "net/eth.h"
 #include "hw/net/lasi_82596.h"
 #include "hw/net/i82596.h"

hw/net/meson.build

@@ -33,7 +33,7 @@ system_ss.add(when: 'CONFIG_MARVELL_88W8618', if_true: files('mv88w8618_eth.c'))
 system_ss.add(when: 'CONFIG_CADENCE', if_true: files('cadence_gem.c'))
 system_ss.add(when: 'CONFIG_STELLARIS_ENET', if_true: files('stellaris_enet.c'))
 system_ss.add(when: 'CONFIG_LANCE', if_true: files('lance.c'))
-system_ss.add(when: 'CONFIG_LASI_I82596', if_true: files('lasi_i82596.c'))
+system_ss.add(when: 'CONFIG_LASI_82596', if_true: files('lasi_i82596.c'))
 system_ss.add(when: 'CONFIG_I82596_COMMON', if_true: files('i82596.c'))
 system_ss.add(when: 'CONFIG_SUNHME', if_true: files('sunhme.c'))
 system_ss.add(when: 'CONFIG_FTGMAC100', if_true: files('ftgmac100.c'))