modules/libgcrypt: Optimize algorithm selection for 310KB space reduction

Algorithm-specific optimization targeting only required cryptographic functions:
- Ciphers: aes des chacha20 (for GPG2 and factory reset)
- Public key: rsa ecc (RSA keys and ECDSA/ECDH nistp256)
- Digests: sha1 sha256 sha512 blake2 (essential hash functions)

Space reduction:
- Baseline (stripped): 814,928 bytes
- Optimized (stripped): 497,504 bytes
- Space saved: 317,424 bytes (310KB)
- Reduction: 38.9%

Excluded unused algorithms:
- Symmetric: arcfour blowfish cast5 twofish serpent rfc2268 seed camellia idea salsa20 gost28147 sm4
- Digests: crc gostr3411-94 md4 md5 rmd160 sha3 tiger whirlpool stribog sm3
- Public key: dsa elgamal

Hardware acceleration preserved for optimal performance.
Maintains full functionality for GPG2 operations and factory reset key generation.

Signed-off-by: GitHub Copilot <noreply@github.com>
Signed-off-by: Thierry Laurion <insurgo@riseup.net>

Author: tlaurion

modules/libgcrypt

@@ -15,6 +15,9 @@ libgcrypt_configure := \
 	--disable-doc \
 	--disable-static \
 	--disable-jent-support \
+	--enable-ciphers="aes des chacha20" \
+	--enable-pubkey-ciphers="rsa ecc" \
+	--enable-digests="sha1 sha256 sha512 blake2" \
 	--with-gpg-error-prefix="$(INSTALL)" \
 
 libgcrypt_target := $(MAKE_JOBS) \