[PATCH 3/4] tpm_crb_ffa: Include linux/slab.h for kzalloc_obj() and kfree()

The drivers/char/tpm/tpm_crb_ffa.c file uses kzalloc_obj() and kfree(),
which are declared in linux/slab.h. It currently relies on this header
being included indirectly through linux/module.h -> linux/elf.h. Add the
missing include in preparation for removing the linux/elf.h include from
linux/module.h.

Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
---
 drivers/char/tpm/tpm_crb_ffa.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/tpm/tpm_crb_ffa.c b/drivers/char/tpm/tpm_crb_ffa.c
index 025c4d4b17ca..af4466cdc297 100644
--- a/drivers/char/tpm/tpm_crb_ffa.c
+++ b/drivers/char/tpm/tpm_crb_ffa.c

@@ -12,6 +12,7 @@
 #include <linux/arm_ffa.h>
 #include <linux/delay.h>
 #include <linux/moduleparam.h>
+#include <linux/slab.h>
 #include "tpm_crb_ffa.h"
 
 static unsigned int busy_timeout_ms = 2000;

-- 
2.54.0