arm64: defconfig: Ensure CRYPTO_CHACHA20_NEON is selected

Since commit 17ec3e7 ("crypto: lib/Kconfig - Hide arch options from
user"), the CRYPTO_CHACHA20_NEON option is no longer selected by default
due to changes in how crypto library options are exposed and selected.

To restore the previous behavior and ensure CRYPTO_CHACHA20_NEON is
enabled, explicitly select CONFIG_CRYPTO_CHACHA20 in the defconfig. This
pulls in CRYPTO_LIB_CHACHA_INTERNAL and allows CRYPTO_CHACHA20_NEON to be
selected automatically as before.

Fixes: 17ec3e7 ("crypto: lib/Kconfig - Hide arch options from user")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: Fabio Estevam

arch/arm64/configs/defconfig

@@ -1729,12 +1729,12 @@ CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_ISO8859_1=y
 CONFIG_SECURITY=y
 CONFIG_CRYPTO_USER=y
+CONFIG_CRYPTO_CHACHA20=m
 CONFIG_CRYPTO_TEST=m
 CONFIG_CRYPTO_ECHAINIV=y
 CONFIG_CRYPTO_MICHAEL_MIC=m
 CONFIG_CRYPTO_ANSI_CPRNG=y
 CONFIG_CRYPTO_USER_API_RNG=m
-CONFIG_CRYPTO_CHACHA20_NEON=m
 CONFIG_CRYPTO_GHASH_ARM64_CE=y
 CONFIG_CRYPTO_SHA1_ARM64_CE=y
 CONFIG_CRYPTO_SHA2_ARM64_CE=y