mips: fix build

wangrunji0408 · wangrunji0408 · commit 2722371d86f3 · 2019-09-24T01:49:08.000+08:00
diff --git a/kernel/src/arch/mipsel/board/malta/mod.rs b/kernel/src/arch/mipsel/board/malta/mod.rs
@@ -36,7 +36,7 @@ pub fn init_driver() {
         yres_virtual: 600,
         xoffset: 0,
         yoffset: 0,
-        depth: fb::ColorDepth::try_from(8)?,
+        depth: fb::ColorDepth::ColorDepth8,
         format: fb::ColorFormat::VgaPalette,
         paddr: 0xb0000000,
         vaddr: 0xb0000000,
diff --git a/kernel/src/arch/mipsel/board/thinpad/mod.rs b/kernel/src/arch/mipsel/board/thinpad/mod.rs
@@ -25,7 +25,7 @@ pub fn init_driver() {
         yres_virtual: 600,
         xoffset: 0,
         yoffset: 0,
-        depth: fb::ColorDepth::try_from(8)?,
+        depth: fb::ColorDepth::ColorDepth8,
         format: fb::ColorFormat::RGB332,
         paddr: 0xa2000000,
         vaddr: 0xa2000000,
