libfdt gained a new dependency on strrchr, so copy the implementation
from lib/string.c.

Cc: Russell King <[email protected]>
Cc: [email protected]
Signed-off-by: Rob Herring <[email protected]>
---
Please ack. This is a dependency for dtc/libfdt sync with upstream.

 arch/arm/boot/compressed/string.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/compressed/string.c 
b/arch/arm/boot/compressed/string.c
index 13c90abc68d6..ade5079bebbf 100644
--- a/arch/arm/boot/compressed/string.c
+++ b/arch/arm/boot/compressed/string.c
@@ -121,6 +121,16 @@ char *strchr(const char *s, int c)
        return (char *)s;
 }
 
+char *strrchr(const char *s, int c)
+{
+       const char *last = NULL;
+       do {
+               if (*s == (char)c)
+                       last = s;
+       } while (*s++);
+       return (char *)last;
+}
+
 #undef memset
 
 void *memset(void *s, int c, size_t count)
-- 
2.14.1

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