fix(st-crypto): move flag control into source code

Remove the control from the include file to avoid compilation
issue. Add the check in the source code instead.

Signed-off-by: Lionel Debieve <lionel.debieve@foss.st.com>
Change-Id: I533f829607f76389399a3e8dbc3c6095278562ab
diff --git a/include/drivers/st/stm32_pka.h b/include/drivers/st/stm32_pka.h
index ad4690a..34b3f6b 100644
--- a/include/drivers/st/stm32_pka.h
+++ b/include/drivers/st/stm32_pka.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2022-2023, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -9,24 +9,11 @@
 
 #include <stdint.h>
 
-#if !PKA_USE_NIST_P256 && !PKA_USE_BRAINPOOL_P256R1 && !PKA_USE_BRAINPOOL_P256T1 && \
-	!PKA_USE_NIST_P521
-#error "At least one ECDSA curve needs to be selected"
-#endif
-
 enum stm32_pka_ecdsa_curve_id {
-#if PKA_USE_NIST_P256
 	PKA_NIST_P256,
-#endif
-#if PKA_USE_BRAINPOOL_P256R1
 	PKA_BRAINPOOL_P256R1,
-#endif
-#if PKA_USE_BRAINPOOL_P256T1
 	PKA_BRAINPOOL_P256T1,
-#endif
-#if PKA_USE_NIST_P521
 	PKA_NIST_P521,
-#endif
 };
 
 struct stm32_pka_platdata {