This patch adds four new packages support for stm32mp157c die:

STM32MP_PKG_AA: LFBGA448 (18*18), 176 IOs
STM32MP_PKG_AB: LFBGA354 (16*16), 98 IOs
STM32MP_PKG_AC: TFBGA361 (12*12), 148 IOs
STM32MP_PKG_AD: TFBGA257 (10*10), 98 IOs
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>