[U-Boot] [PATCH V2 2/4] mmc: sdhci: fix build warning

[Lei Wen]

If CONFIG_MMC_SDHCI_IO_ACCESSORS is defined, the following warning would
shows up:

include/sdhci.h:224: warning: 'struct sdhci_host' declared inside
parameter list
include/sdhci.h:224: warning: its scope is only this definition or
declaration, which is probably not what you want
include/sdhci.h:225: warning: 'struct sdhci_host' declared inside
parameter list
include/sdhci.h:226: warning: 'struct sdhci_host' declared inside
parameter list
include/sdhci.h:227: warning: 'struct sdhci_host' declared inside
parameter list
include/sdhci.h:228: warning: 'struct sdhci_host' declared inside
parameter list
include/sdhci.h:229: warning: 'struct sdhci_host' declared inside
parameter list

Change-Id: I9e3588af34d90cda342cf32316ff9cfe57c1b5d1
Signed-off-by: Lei Wen <leiwen at marvell.com>
---
Changelog:
V2: code style change

 include/sdhci.h |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/include/sdhci.h b/include/sdhci.h
index 6d52ce9..e84d2dc 100644
--- a/include/sdhci.h
+++ b/include/sdhci.h
@@ -214,6 +214,9 @@
  */
 #define SDHCI_QUIRK_32BIT_DMA_ADDR	(1 << 0)
 
+/* to make gcc happy */
+struct sdhci_host;
+
 /*
  * Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2.
  */
-- 
1.7.0.4