19484: makefiles/arch/msp430.inc.mk: Fix compilation issues with GCC 12 r=maribu a=maribu
### Contribution description
This fixes the following compilation issues:
/home/maribu/Repos/software/RIOT/cpu/msp430fxyz/periph/gpio.c: In function 'gpio_periph_mode':
/home/maribu/Repos/software/RIOT/cpu/msp430fxyz/periph/gpio.c:95:15: error: array subscript 0 is outside array bounds of 'msp_port_isr_t[0]' [-Werror=array-bounds]
95 | sel = &(isrport->SEL);
| ^~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
by adding `CFLAGS += --param-min-pagesize=0` for GCC 12 (same issue as already fixed for AVR).
and:
/usr/lib/gcc/msp430-elf/12.2.0/../../../../msp430-elf/bin/ld: warning: /home/maribu/Repos/software/RIOT/cpu/msp430_common/ldscripts/xfa.ld contains output sections; did you forget -T?
by adding the missing `-T`.
### Testing procedure
The following should still work:
- `make BOARD=msb-430 -C examples/hello-world`
- `make BOARD=msb-430 -C tests/xfa flash test`
### Issues/PRs references
None
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
f4fa6bb809