xilinx_spips: Add verbose LQSPI debug output

You really need this is you want to track a guest banging on LQSPI.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Message-id: 26e508da4af11058d37daa777064c9e5c2a69abb.1369117359.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/ssi/xilinx_spips.c

diff --git a/hw/ssi/xilinx_spips.c b/hw/ssi/xilinx_spips.c
index a8691d5..29636ce 100644
--- a/hw/ssi/xilinx_spips.c
+++ b/hw/ssi/xilinx_spips.c
@@ -456,10 +456,13 @@
     int i;
     XilinxQSPIPS *q = opaque;
     XilinxSPIPS *s = opaque;
+    uint32_t ret;
 
     if (addr >= q->lqspi_cached_addr &&
             addr <= q->lqspi_cached_addr + LQSPI_CACHE_SIZE - 4) {
-        return q->lqspi_buf[(addr - q->lqspi_cached_addr) >> 2];
+        ret = q->lqspi_buf[(addr - q->lqspi_cached_addr) >> 2];
+        DB_PRINT("addr: %08x, data: %08x\n", (unsigned)addr, (unsigned)ret);
+        return ret;
     } else {
         int flash_addr = (addr / num_effective_busses(s));
         int slave = flash_addr >> LQSPI_ADDRESS_BITS;