tests/qtest/libqos/e1000e: Use IVAR shift definitions

There were still some constants defined in e1000_regs.h.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20221105053010.38037-1-akihiko.odaki@daynix.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/qtest/libqos/e1000e.c

@@ -30,9 +30,9 @@
 #include "e1000e.h"
 
 #define E1000E_IVAR_TEST_CFG \
-    (E1000E_RX0_MSG_ID | E1000_IVAR_INT_ALLOC_VALID             | \
-     ((E1000E_TX0_MSG_ID | E1000_IVAR_INT_ALLOC_VALID) << 8)    | \
-     ((E1000E_OTHER_MSG_ID | E1000_IVAR_INT_ALLOC_VALID) << 16) | \
+    (((E1000E_RX0_MSG_ID | E1000_IVAR_INT_ALLOC_VALID) << E1000_IVAR_RXQ0_SHIFT) | \
+     ((E1000E_TX0_MSG_ID | E1000_IVAR_INT_ALLOC_VALID) << E1000_IVAR_TXQ0_SHIFT) | \
+     ((E1000E_OTHER_MSG_ID | E1000_IVAR_INT_ALLOC_VALID) << E1000_IVAR_OTHER_SHIFT) | \
      E1000_IVAR_TX_INT_EVERY_WB)
 
 #define E1000E_RING_LEN (0x1000)