xilinx_spips: Fix bus setup conditional check

The R_LQPSI_CFG register has the LQSPI_CFG_SEP_BUS and LQSPI_CFG_TWO_MEM bits.
Signed-off-by: NNathan Rossi <nathan.rossi@xilinx.com>
Signed-off-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: d76c8e364c80a42352ae4f0661aff2cd17ad32a4.1362373359.git.peter.crosthwaite@xilinx.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/xilinx_spips.c

@@ -143,8 +143,8 @@ typedef struct {
 
 static inline int num_effective_busses(XilinxSPIPS *s)
 {
-    return (s->regs[R_LQSPI_STS] & LQSPI_CFG_SEP_BUS &&
-            s->regs[R_LQSPI_STS] & LQSPI_CFG_TWO_MEM) ? s->num_busses : 1;
+    return (s->regs[R_LQSPI_CFG] & LQSPI_CFG_SEP_BUS &&
+            s->regs[R_LQSPI_CFG] & LQSPI_CFG_TWO_MEM) ? s->num_busses : 1;
 }
 
 static void xilinx_spips_update_cs_lines(XilinxSPIPS *s)