include: Bump-up version to 1.5

This patch updates OpenSBI version to 1.5 as part of
release preparation.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
diff --git a/include/sbi/sbi_version.h b/include/sbi/sbi_version.h
index 8d9e395..d876aa5 100644
--- a/include/sbi/sbi_version.h
+++ b/include/sbi/sbi_version.h
@@ -11,7 +11,7 @@
 #define __SBI_VERSION_H__
 
 #define OPENSBI_VERSION_MAJOR 1
-#define OPENSBI_VERSION_MINOR 4
+#define OPENSBI_VERSION_MINOR 5
 
 /**
  * OpenSBI 32-bit version with: