radix tree test suite: add pr_err define

define pr_err to printk

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Liam R. Howlett <[e-mail]>
Tested-by: Yu Zhao <[e-mail]>
Cc: Catalin Marinas <[e-mail]>
Cc: David Hildenbrand <[e-mail]>
Cc: David Howells <[e-mail]>
Cc: Davidlohr Bueso <[e-mail]>
Cc: "Matthew Wilcox (Oracle)" <[e-mail]>
Cc: SeongJae Park <[e-mail]>
Cc: Sven Schnelle <[e-mail]>
Cc: Vlastimil Babka <[e-mail]>
Cc: Will Deacon <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

tools/testing/radix-tree/linux/kernel.h

···
 #include "../../../include/linux/kconfig.h"
 
 #define printk printf
+#define pr_err printk
 #define pr_info printk
 #define pr_debug printk
 #define pr_cont printk