While executing rust-testing observed some ui testfailures due to
below warning message.

'powerpc' is not a recognized processor for this target in rust

So renamed target cpu for "powerpc" in "llvm_cpu" to "7400" as per
default tune for qemuppc.

Signed-off-by: Vinay Kumar <redacted>
---
 meta/recipes-devtools/rust/rust.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/recipes-devtools/rust/rust.inc b/meta/recipes-devtools/rust/rust.inc
index a1223f45e7..ee3176b559 100644
--- a/meta/recipes-devtools/rust/rust.inc
+++ b/meta/recipes-devtools/rust/rust.inc

@@ -290,7 +290,7 @@ def llvm_cpu(d):
     trans['x86-64'] = "x86-64"
     trans['i686'] = "i686"
     trans['i586'] = "i586"
-    trans['powerpc'] = "powerpc"
+    trans['powerpc'] = "7400"
     trans['mips64'] = "mips64"
     trans['mips64el'] = "mips64"
     trans['riscv64'] = "generic-rv64"

-- 
2.17.1