[XS] Change in coreboot[main]: soc/mediatek/common/pcie: Add DEVTREE_CONST qualifier

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/84113?usp=email )

Change subject: soc/mediatek/common/pcie: Add DEVTREE_CONST qualifier
......................................................................

soc/mediatek/common/pcie: Add DEVTREE_CONST qualifier

Currently pcie.c is built into ramstage only, where DEVTREE_CONST is an
empty macro, so there's no problem with that. However, if we would like
to include that file in pre-ramstage, then DEVTREE_CONST would be
'const', leading to the following build error:

```
src/soc/mediatek/common/pcie.c:104:26: error: assignment discards
'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
104 |                 root_dev = pcidev_path_on_root(devfn);
    |                          ^
```

BUG=none
TEST=emerge-cherry coreboot

Change-Id: Ia7c95424019ec0dca50bbc6be7f81b6180d06d6e
Signed-off-by: Yidi Lin 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84113
Reviewed-by: Jianjun Wang 
Tested-by: build bot (Jenkins) 
Reviewed-by: Yu-Ping Wu 
---
M src/soc/mediatek/common/pcie.c
1 file changed, 1 insertion(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Yu-Ping Wu: Looks good to me, approved
  Jianjun Wang: Looks good to me, approved

diff --git a/src/soc/mediatek/common/pcie.c b/src/soc/mediatek/common/pcie.c
index ce9055a..c07cc4f 100644
--- a/src/soc/mediatek/common/pcie.c
+++ b/src/soc/mediatek/common/pcie.c
@@ -96,7 +96,7 @@

static uintptr_t mtk_pcie_get_controller_base(pci_devfn_t devfn)
 {
-	struct device *root_dev;
+	DEVTREE_CONST struct device *root_dev;
    const mtk_soc_config_t *config;
    static uintptr_t base = 0;