bootutil: Revert changes to cap values

uint32_t bootutil_get_caps(void);

#define BOOTUTIL_CAP_RSA2048                (1<<0)

#define BOOTUTIL_CAP_ECDSA_P256             (1<<1)

#define BOOTUTIL_CAP_SWAP_USING_SCRATCH     (1<<2)

#define BOOTUTIL_CAP_OVERWRITE_UPGRADE      (1<<3)

#define BOOTUTIL_CAP_ENC_RSA                (1<<4)

#define BOOTUTIL_CAP_ENC_KW                 (1<<5)

#define BOOTUTIL_CAP_VALIDATE_PRIMARY_SLOT  (1<<6)

#define BOOTUTIL_CAP_RSA3072                (1<<7)

#define BOOTUTIL_CAP_ED25519                (1<<8)

#define BOOTUTIL_CAP_ENC_EC256              (1<<9)

#define BOOTUTIL_CAP_SWAP_USING_MOVE        (1<<10)

#define BOOTUTIL_CAP_DOWNGRADE_PREVENTION   (1<<11)

#define BOOTUTIL_CAP_ENC_X25519             (1<<12)

#define BOOTUTIL_CAP_BOOTSTRAP              (1<<13)

#define BOOTUTIL_CAP_AES256                 (1<<14)

#define BOOTUTIL_CAP_RAM_LOAD               (1<<15)

#define BOOTUTIL_CAP_DIRECT_XIP             (1<<16)

#define BOOTUTIL_CAP_HW_ROLLBACK_PROT       (1<<17)

                                /* reserved (1<<1) */

#define BOOTUTIL_CAP_ECDSA_P256             (1<<2)

#define BOOTUTIL_CAP_SWAP_USING_SCRATCH     (1<<3)

#define BOOTUTIL_CAP_OVERWRITE_UPGRADE      (1<<4)

#define BOOTUTIL_CAP_ENC_RSA                (1<<5)

#define BOOTUTIL_CAP_ENC_KW                 (1<<6)

#define BOOTUTIL_CAP_VALIDATE_PRIMARY_SLOT  (1<<7)

#define BOOTUTIL_CAP_RSA3072                (1<<8)

#define BOOTUTIL_CAP_ED25519                (1<<9)

#define BOOTUTIL_CAP_ENC_EC256              (1<<10)

#define BOOTUTIL_CAP_SWAP_USING_MOVE        (1<<11)

#define BOOTUTIL_CAP_DOWNGRADE_PREVENTION   (1<<12)

#define BOOTUTIL_CAP_ENC_X25519             (1<<13)

#define BOOTUTIL_CAP_BOOTSTRAP              (1<<14)

#define BOOTUTIL_CAP_AES256                 (1<<15)

#define BOOTUTIL_CAP_RAM_LOAD               (1<<16)

#define BOOTUTIL_CAP_DIRECT_XIP             (1<<17)

#define BOOTUTIL_CAP_HW_ROLLBACK_PROT       (1<<18)

/*

 * Query the number of images this bootloader is configured for.  This